What One Sin Keeps People Out of Heaven?

This would be the sin of unbelief!

Heb 11:6 But without faith it is impossible to please him: for he that cometh to God must believe that he is, and that he is a rewarder of them that diligently seek him.

Who gives faith?

Ro 12:3 For I say, through the grace given unto me, to every man that is among you, not to think of himself more highly than he ought to think; but to think soberly, according as God hath dealt to every man the measure of faith.

Where else does faith come from?

Ro 10:17 So then faith cometh by hearing, and hearing by the word of God.

Faith comes by hearing, can everyone hear?

Mt 11:15 He that hath ears to hear, let him hear. (Jesus indicates that some have ears to hear and some don’t. The question arises, if some do have ears to hear, how did they get them and if some don’t, how did this come to be? The answer is given in Ex 4:11 And the LORD said unto him, Who hath made man's mouth? or who maketh the dumb, or deaf, or the seeing, or the blind? have not I the LORD? This is true for physical and spiritual deafness and blindness.)

Speaking to the disciples about the spiritual deafness of the Pharisees Jesus said, Mt 13:11 He answered and said unto them, Because it is given unto you to know the mysteries of the kingdom of heaven, but to them it is not given. (Who gives it to the disciples? Who does not give it to the Pharisees? In each case God is the one choosing who can hear and who cannot.)

Can we choose to hear if we are deaf? Can we choose to receive if it is not given? Can we enter into the Kingdom of our own choice?

Joh 14:6 Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me. (Jesus has to escort us in, we cannot come in on our own.)

In a discussion regarding who could be saved Jesus taught:
Mr 10:26 And they were astonished out of measure, saying among themselves, Who then can be saved?
27 And Jesus looking upon them saith, With men it is impossible, but not with God: for with God all things are possible.

Joh 6:44 No man can come to me, except the Father which hath sent me draw him: and I will raise him up at the last day. (Notice the sequence here! No man can come to Jesus! Period! Unless they meet the exception which is to come to Jesus the Father must draw them . . . followed by, “and I WILL raise them up at the last day”. Who did Jesus say He would raise up? Those who the Father draws! No exceptions! Jesus here establishes that He and God the Father are solely responsible for everyone who does or does not come to Him. If anyone could choose not to come to Jesus when the Father draws them, then Jesus couldn’t have declared in truth that He absolutely will raise them up!)

Lu 10:22 All things are delivered to me of my Father: and no man knoweth who the Son is, but the Father; and who the Father is, but the Son, and he to whom the Son will reveal him.

1Co 4:1 Let a man so account of us, as of the ministers of Christ, and stewards of the mysteries of God.
2 Moreover it is required in stewards, that a man be found faithful.
3 But with me it is a very small thing that I should be judged of you, or of man's judgment: yea, I judge not mine own self.
4 For I know nothing by myself; yet am I not hereby justified: but he that judgeth me is the Lord.
5 Therefore judge nothing before the time, until the Lord come, who both will bring to light the hidden things of darkness, and will make manifest the counsels of the hearts: and then SHALL EVERY MAN have praise of God.
6 And these things, brethren, I have in a figure transferred to myself and to Apollos for your sakes; that ye might learn in us not to think of men above that which is written, that no one of you be puffed up for one against another.
7 For WHO MAKETH THEE TO DIFFER from another? and WHAT hast thou that thou DIDST NOT RECEIVE? now if thou didst receive it, why dost thou glory, as if thou hadst not received it?

In the above passages we find that God chooses who to give faith to. We find the Pharisees in a state where it is not given them to understand. We also find that man cannot choose to come to God, but Jesus has to get them. We see that by default, no one can know God or the Son unless God delivers them to the Son and the Son then reveals God to them. Lu 10;22 We observe that faith is given by God and without it, it is impossible to please God. We find that being saved is impossible for man, and that NOTHING is impossible with God. Is it possible for man to choose to be saved? Absolutely not, unless God gives it to him to hear and to believe. Is it possible for God to cause a person to be blind to the obvious, and then to give sight to that blind man. Absolutely, nothing is impossible for God. Is it possible for God to cause every single human He created to be saved? Absolutely! Nothing is impossible with God unless He doesn’t want to. Does God want to save every human sinner? Does He want to save the ungodly?

1Ti 1:15 This is a faithful saying, and worthy of all acceptation, that Christ Jesus came into the world to save sinners; of whom I am chief.

Ro 5:6 For when we were yet without strength, in due time Christ died for the ungodly.

2Pe 3:9 The Lord is not slack concerning his promise, as some men count slackness; but is longsuffering to us-ward, not willing that any should perish, but that all should come to repentance.

I think it is interesting that those who claim to know the gospel today, preach a powerless Christ who is unable to save whoever He wants, and preach that people have more power over their own salvation than Jesus does.
This is not the teaching of the Bible. The Christian church today, very closely resembles the religious establishment of Jesus day. Full of divisions, full of meaningless traditions, having a form of godliness but denying the power of Christ, the power of His resurrection and glorifying man instead. The leaders are still collecting tithes and enjoying the exalted positions of spiritual leadership, while many are still making their followers two times the children of hell that they themselves are.

I have good news! Our Saviour, Jesus Christ, has come to set all men free from the burdens that have been laid on them.
Mt 11:28 Come unto me, all ye that labour and are heavy laden, and I will give you rest.
29 Take my yoke upon you, and learn of me; for I am meek and lowly in heart: and ye shall find rest unto your souls.
30 For my yoke is easy, and my burden is light.

Are you a church leader? This good news is for you too. You don’t need to stay in the bondage of religion. Let God set you free. You know what I’m talking about. In your religion you are not allowed to believe differently than your creed. No doubt you do, in some areas, yet you cannot say so. Do not worry about what you will eat, or what you will wear or where you will sleep for your heavenly Father knows you need all these things. He feeds the birds, He will feed you, oh ye of little faith. Come out from among them. Pr 29:25 The fear of man bringeth a snare: but whoso putteth his trust in the LORD shall be safe.He that has ears to hear, let him hear.

1Jo 2:27 But the anointing which ye have received of him abideth in you, and ye need not that any man teach you: but as the same anointing teacheth you of all things, and is truth, and is no lie, and even as it hath taught you, ye shall abide in him.

To bring this full circle, I include a few more verses. I encourage you to note the word “all”. You see, in the above verses it is established that God alone controls if and when we are saved. The following verses indicate how many will be saved by the end of time. If God is revealing His mystery to you through this, praise Him.

Joh 12:32 And I, if I be lifted up from the earth, will draw ALL men unto me.
1Ti 4:10 For therefore we both labour and suffer reproach, because we trust in the living God, who is the Saviour of ALL men, SPECIALLY of those that believe.
1Jo 2:2 And he is the propitiation for our sins: and not for ours only, but also for the sins of THE WHOLE WORLD.
1Co 15:22 For as in Adam all die, even so in Christ SHALL ALL be made alive.
Ro 5:18 Therefore as by the offence of one judgment came upon all men to condemnation; even so by the righteousness of one the free gift came upon ALL MEN UNTO JUSTIFICATION of life.

Since we know that faith is given by God to ALL MEN as God see’s fit, and Jesus will draw all men to himself. We also see that all will come to him and be raised with Him on the last day.
Joh 6:44 No man can come to me, except the Father which hath sent me draw him: and I will raise him up at the last day.
Like was pointed out above: NO man CAN come to Jesus! . . . UNLESS . . . the Father draws him . . .and those whom the Father draws, Jesus WILL raise up at the last day.
Ro 3:30 Seeing it is one God, which shall justify the circumcision by faith, and uncircumcision through faith.
Ro 11:25 For I would not, brethren, that ye should be ignorant of this mystery, lest ye should be wise in your own conceits; that blindness in part is happened to Israel, UNTIL the FULNESS OF THE GENTILES BE COME IN. 26 And so ALL ISRAEL SHALL BE SAVED: as it is written, There shall come out of Sion the Deliverer, and shall turn away ungodliness from Jacob:
(Both are saved, all Israel, and all the Gentiles. That's everyone.)

1Ti 1:15 This is a faithful saying, and worthy of all acceptation, that Christ Jesus came into the world to save sinners; of whom I am chief. (Who is NOT a sinner?)

Ro 3:23 For all have sinned, and come short of the glory of God; (Who did Jesus come to save?)
Ro 5:12 Wherefore, as by one man sin entered into the world, and death by sin; and so death passed upon all men, for that all have sinned:

Jesus came into the world to save sinners and He cannot fail! He is the Word and it is prophesied that the Word will accomplish ALL that it was sent to do. Isa 55:11 So shall my word be that goeth forth out of my mouth: it shall not return unto me void, but it shall accomplish that which I please, and it shall prosper in the thing whereto I sent it.

Ro 11:32 For God hath concluded them all in unbelief, that he might have mercy upon all.

This is the true Good News of Great Joy which shall be to all people! The false tradition of “eternal’ damnation is a demonic affront to the Glory and Power of Jesus’ resurrection.
Lu 2:10 And the angel said unto them, Fear not: for, behold, I bring you good tidings of GREAT JOY, which SHALL BE to ALL PEOPLE.
Eternal hell can only bring anguish to all people for all will be affected. If one person is in eternal hell, since we are all one in Adam, that would be the same as having one of your body parts being in extreme irritation, without hope of healing. Ever had a broken toe? Or finger? Or any ailment such as a headache or stomach ache? The whole body can be incapacitated by a single part in pain. In Adam we are all one, and to have one part in agony we all suffer and are affected. If Christ doesn’t save all of Adam, then we all will forever bear the consequences. As in Adam all die so in Christ shall all be made alive.

Ro 8:21 Because the creature itself also SHALL BE delivered from the bondage of corruption into the glorious liberty of the children of God.