All Scripture is inspired by God and is profitable for teaching, for rebuking, for correcting, for training in righteousness, so that the man of God may be complete, equipped for every good work. 2 Timothy 3:16-17
If we say, "We have no sin," we are deceiving ourselves, and the truth is not in us. If we confess our sins, He is faithful and righteous to forgive us our sins and to cleanse us from all unrighteousness.
1 John 1:8-9
…for You gave Him authority over all flesh; so He may give eternal life to all You have given Him. This is eternal life: that they may know You, the only true God, and the One You have sent —Jesus Christ. I have glorified You on the earth by completing the work You gave Me to do. John 17:2-4
Truthful lips endure forever, but a lying tongue, only a moment. Deceit is in the hearts of those who plot evil, but those who promote peace have joy.
Proverbs 12:19-20