NASB 1995
I am afraid that when I come again my God may humiliate me before you, and I may mourn over many of those who have sinned in the past and not repented of the impurity, immorality and sensuality which they have practiced.

American Standard Version
lest again when I come my God should humble me before you, and I should mourn for many of them that have sinned heretofore, and repented not of the uncleanness and fornication and lasciviousness which they committed.

Berean Study Bible
I am afraid that when I come again, my God will humble me before you, and I will be grieved over many who have sinned earlier and have not repented of their acts of impurity, sexual immorality, and debauchery.

Douay-Rheims Bible
Lest again, when I come, God humble me among you: and I mourn many of them that sinned before, and have not done penance for the uncleanness, and fornication, and lasciviousness, that they have committed.

English Revised Version
lest, when I come again, my God should humble me before you, and I should mourn for many of them that have sinned heretofore, and repented not of the uncleanness and fornication and lasciviousness which they committed.

King James Bible
And lest, when I come again, my God will humble me among you, and that I shall bewail many which have sinned already, and have not repented of the uncleanness and fornication and lasciviousness which they have committed.

World English Bible
that again when I come my God would humble me before you, and I would mourn for many of those who have sinned before now, and not repented of the uncleanness and sexual immorality and lustfulness which they committed.

Young's Literal Translation
lest again having come, my God may humble me in regard to you, and I may bewail many of those having sinned before, and not having reformed concerning the uncleanness, and whoredom, and lasciviousness, that they did practise.

2 Corinthians 12:21 Additional Translations ...