Ezekiel 18:26
When a righteous man turns away from his righteousness and commits iniquity, he shall die for it; for the iniquity which he has committed he shall die.
1 Corinthians 6:9-10
Do you not know that the unrighteous will not inherit the kingdom of God? Do not be deceived; neither the immoral, nor idolaters, nor adulterers, nor sexual perverts, nor thieves, nor the greedy, nor drunkards, nor revilers, nor robbers will inherit the kingdom of God.
1 Corinthians 10:12
Therefore let any one who thinks that he stands take heed lest he fall.
Galatians 5:21
I warn you, as I warned you before, that those who do such things [serious sins] shall not inherit the kingdom of God.
Ephesians 5:5
Be sure of this, that no fornicator or impure man, or one who is covetous (that is, an idolater), has any inheritance in the kingdom of Christ and of God.
Hebrews 6:4-8
For it is impossible to restore again to repentance those who have once been enlightened, who have tasted the heavenly gift, and have become partakers of the Holy Spirit, and have tasted the goodness of the word of God and the powers of the age to come, if they then commit apostasy, since they crucify the Son of God on their own account and hold him up to contempt. For land which has drunk the rain that often falls upon it, and brings forth vegetation useful to those for whose sake it is cultivated, receives a blessing from God. But if it bears thorns and thistles, it is worthless and near to being cursed; its end is to be burned.
Matthew 22:14
For many are called, but few are chosen.
Romans 6:12-13
Let not sin therefore reign in your mortal bodies, to make you obey their passions. Do not yield your members to sin as instruments of wickedness, but yield yourselves to God as men who have been brought from death to life, and your members to God as instruments of righteousness.
Romans 8:17
If children, then heirs, heirs of God and fellow heirs with Christ, provided we suffer with him in order that we may also be glorified with him.
Romans 11:22
Note then the kindness and the severity of God: severity toward those who have fallen, but God’s kindness to you, provided you continue in his kindness; otherwise you too will be cut off.
2 Timothy 2:12
If we endure, we shall also reign with him; if we deny him, he also will deny us....
John 15:6
If a man does not abide in me, he is cast forth as a branch and withers; and the branches are gathered, thrown into the fire and burned.
Matthew 7:21
"Not every one who says to me, ‘Lord, Lord,’ shall enter the kingdom of heaven, but he who does the will of my Father who is in heaven...."
Matthew 19:23-24
And Jesus said to his disciples, “Truly, I say to you, it will be hard for a rich man to enter the kingdom of heaven. Again I tell you, it is easier for a camel to go through the eye of a needle than for a rich man to enter the kingdom of God.”
Romans 2:5-6
But by your hard and impenitent heart you are storing up wrath for yourself on the day of wrath when God’s righteous judgment will be revealed. For he will render to every man according to his works.