Galatians 2:17 But if, while we sought to be justified in Christ, we ourselves also were found sinners, is Christ a servant of sin? Certainly not! (See RSV)

2 Peter 1:15 Moreover, I will endeavor that ye may be able, after my decease, to have these things always in remembrance. (WBS)

Jude 1:22 Some, when they argue with you, you must endeavor to convince; (WEY)