This is based on a list of 31 verses that’s being shared on social media. I removed 2 verses; added more, and edited some of the text.

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Partial List of Scriptures that refute “once saved always saved” and “only believe”:
* drift away (Heb. 2:1)
* wander away (Mt. 18:12,13)
* wander away from the faith (1 Tim. 6:10,21)
* wander away from the truth and destroy the faith of others by false teachings (2 Tim. 2:18)
* whole body cast into hell for looking at a woman to lust after her (Mt. 5:27-30)
* sins not forgiven for not forgiving others (Mt. 6:15)
* cut down and thrown into the fire for not producing fruit (M. 7:19)
* lose your saltiness (Lk. 14:34,35)
* fall away (Mt. 11:6; Mk. 14:27,29)
* fall from grace (Gal. 5:4)
* ‘brothers’ who practice sexual immorality, uncleanness, lustfulness, hatred, jealousies, outbursts of anger, envyings, drunkenness, etc. will not inherit the kingdom (Gal. 5:13-19)
* “Be not deceived. God is not mocked.” Those who sow to their flesh will reap corruption, not eternal life (Gal. 6:7,8)
* stop believing and fall away in time of testing (Lk. 8:13)
* turn away from the faith (Mt. 24:10)
* wander away from a pure heart, a good conscience and a sincere faith and turn to meaningless talk (1 Tim. 1:5,6)
* broken off and severity for not continuing in His goodness (Rom. 11:19-22)
* turn back and no longer follow Jesus (Jn. 6:66)
* have your faith shipwrecked (1 Tim. 1:19)
* leave the straight way and follow the way of Balaam (2 Pet. 2:15)
* get cut off from Christ and become like a branch that is thrown into the fire and burned (Jn. 15:6)
* go astray (Jn. 16:1)
* insult the Spirit of grace after being sanctified by Jesus’ blood to go into raging fire (Heb. 10:26-29)
* turn away from Christ to follow Satan (1 Tim. 5:11-15)
* depart from the faith (1 Tim. 4:1)
* turn your ears away from the truth and turn aside to myths (2 Tim. 4:4)
* acquire a sinful, unbelieving heart that turns away from the living God (Heb. 3:12)
* without sanctification, falls short of the grace of God and is rejected (Heb. 12:14-17)
* turn away from him who warns us from heaven to not escape (Heb. 12:25)
* didn’t overcome, defiled garments, name blotted out of the book of life (Rev. 3:1-5)
* become lukewarm and get spit out of Jesus’ mouth (Rev. 3:15,16)
* did not remain faithful and be hurt by the second death (Rev. 2:10,11)
* have God take away your share in the tree of life and in the holy city (Rev. 22:19)
* wander from the truth and become a sinner in need of having your soul saved again (James 5:19,20)
* return to sin after knowing the Lord Jesus Christ (2 Pet. 2:20-22)
* be carried away by the error of lawless men and fall from your secure position (2 Pet. 3:17)
* be carried away by all kinds of strange teachings (Heb. 13:9)
* the cowardly, sexually immoral and all liars will be in the lake that burns with fire and sulfur (Rev. 21:8)

Who then does go to heaven?:

Who-Goes-To-Heaven Scriptures — Narrow is the Way | Who are the Children of God? — “There is therefore now *no condemnation* to those who are IN CHRIST Jesus, who don’t WALK according to the flesh, but ACCORDING TO THE SPIRIT”