The ninth commandment requires the maintaining and promoting of truth between man and man1 , and of our own2 , and our neighbour's good name3 , especially in witness-bearing.4
16 These are the things that ye shall do; Speak ye every man the truth to his neighbour; execute the judgment of truth and peace in your gates:
1 Peter 3:16
16 Having a good conscience; that, whereas they speak evil of you, as of evildoers, they may be ashamed that falsely accuse your good conversation in Christ.
Acts 25:10
10 Then said Paul, I stand at Caesar's judgment seat, where I ought to be judged: to the Jews have I done no wrong, as thou very well knowest.
3 John 1:12
12 Demetrius hath good report of all men, and of the truth itself: yea, and we also bear record; and ye know that our record is true.
Proverbs 14:5, 25
5 A faithful witness will not lie: but a false witness will utter lies.
25 A true witness delivereth souls: but a deceitful witness speaketh lies.