Hebrews 2:1-4
Therefore we must pay much closer attention to what we have heard, lest we drift away from it. For since the message declared by angels proved to be reliable and every transgression or disobedience received a just retribution, how shall we escape if we neglect such a great salvation? It was declared at first by the Lord, and it was attested to us by those who heard, while God also bore witness by signs and wonders and various miracles and by gifts of the Holy Spirit distributed according to his will.

Matthew 5:13
"You are the salt of the earth. But if the salt loses its saltiness, how can it be made salty again? It is no longer good for anything, except to be thrown out and trampled by men.

John 15:5,6
"I am the vine; you are the branches. If a man remains in me and I in him, he will bear much fruit; apart from me you can do nothing. If anyone does not remain in me, he is like a branch that is thrown away and withers; such branches are picked up, thrown into the fire and burned.

2 Peter 2:21-23
It would have been better for them not to have known the way of righteousness, than to have known it and then to turn their backs on the sacred command that was passed on to them. Of them the proverbs are true: "A dog returns to its vomit," and, "A sow that is washed goes back to her wallowing in the mud."

1 John 5:16-17
If anyone sees his brother commit a sin that does not lead to death, he should pray and God will give him life. I refer to those whose sin does not lead to death. There is a sin that leads to death. I am not saying that he should pray about that. All wrongdoing is sin, and there is sin that does not lead to death.

Matthew 12:31
And so I tell you, every sin and blasphemy will be forgiven men, but the blasphemy against the Spirit will not be forgiven.

John 14:16-17
And I will ask the Father, and he will give you another Counselor to be with you forever— the Spirit of truth. The world cannot accept him, because it neither sees him nor knows him. But you know him, for he lives with you and will be in you.

Since Christians are the only ones who can know the Holy Spirit, then they are the only ones who can blaspheme the Spirit. You can only be born again once. That's why this is the only SIN that is unforgivable. No other sin will be counted against you if you are in Christ. If you have never accepted Jesus as Lord and been baptized into Him you are not capable of committing the unpardonable SIN and the Lord Jesus will forgive you for any sins you have committed providing you accept Him as Lord with your heart and are baptized into the name of Jesus. Acts 2:37-41 This does not mean if you stumble or fall into a sin as a Christian that you're finished. But you must never in your heart deny The Lord that lives within you. We all stumble and sin and go through struggles but I have never felt that I have ever been wronged by Jesus. I've been wrong, and others have been wrong, Jesus has never been anything but accepting, forgiving, loving, encouraging, awesome, glorious, Holy, righteous, and GOOD. How could anyone want to leave that. Yes, true Christianity has its costs but they are outweighed by the promises we have been given. If we do not quit, an eternity with Him in a place He calls, Paradise. How could anyone walk away from that???? Peter denied the Lord three times with his mouth but not with his heart. That is why he wept bitterly. Jesus forgave him and you know the rest of the story.

Hebrews 6:4-7
It is impossible for those who have once been enlightened, who have tasted the heavenly gift, who have shared in the Holy Spirit, who have tasted the goodness of the word of God and the powers of the coming age, if they fall away, to be brought back to repentance, because to their loss they are crucifying the Son of God all over again and subjecting Him to public disgrace.

Hebrews 10:29
How much more severely do you think a man deserves to be punished who has trampled the Son of God under foot, who has treated as an unholy thing the blood of the covenant that sanctified him, and who has insulted the Spirit of grace?

Hebrews 10:36-39
For you have need of endurance, so that when you have done the will of God you may receive what is promised. For, "Yet a little while,and the coming one will come and will not delay; but my righteous one shall live by faith, and if he shrinks back,my soul has no pleasure in him." But we are not of those who shrink back and are destroyed, but of those who have faith and preserve their souls.

1 Corinthians 9:27
But I discipline my body and bring it into subjection, lest, when I have preached to others, I myself should become disqualified.

2 Corinthians 13:5,6
Examine yourselves as to whether you are in the faith. Test yourselves. Do you not know yourselves, that Jesus Christ is in you?—unless indeed you are disqualified. But I trust that you will know that we are not disqualified.

Titus 1:16
They profess to know God, but in works they deny Him, being abominable, disobedient, and disqualified for every good work.

Hebrews 12:16
that there be no immoral or godless person like Esau, who sold his own birthright for a single meal. For you know that even afterwards, when he desired to inherit the blessing, he was rejected, for he found no place for repentance, though he sought for it with tears.

Deuteronomy 5:11
Thou shalt not take the name of the LORD thy God in vain: for the LORD will not hold him guiltless that taketh his name in vain.

John 6:67-69
"You do not want to leave too, do you?" Jesus asked the Twelve. Simon Peter answered him, "Lord, to whom shall we go? You have the words of eternal life. We believe and know that you are the Holy One of God."

Find your Faith in Jesus, Keep your Faith in Jesus,
but DO NOT LOSE YOUR FAITH IN JESUS.