Proverbs 14:25

A truthful witness saves souls, but a false witness is deceitful.

Proverbs 14:5

A truthful witness will not lie, but a false witness pours out lies.

Acts 20:21

testifying both to Jews and to Greeks repentance toward God, and faith toward our Lord Jesus.

Acts 20:26-27

Therefore I testify to you this day that I am clean from the blood of all men,

Acts 26:16-20

But arise, and stand on your feet, for I have appeared to you for this purpose: to appoint you a servant and a witness both of the things which you have seen, and of the things which I will reveal to you;

1 Timothy 4:1-3

But the Spirit says expressly that in later times some will fall away from the faith, paying attention to seducing spirits and doctrines of demons,

2 Peter 3:3

knowing this first, that in the last days scoffers will come, mocking and walking after their own lusts,

Treasury of Scripture Knowledge

Summary

A true witness delivereth souls: but a deceitful witness speaketh lies.

Bible References

General references

Proverbs 14:5
A truthful witness will not lie, but a false witness pours out lies.
Acts 20:21
testifying both to Jews and to Greeks repentance toward God, and faith toward our Lord Jesus.
Acts 26:16
But arise, and stand on your feet, for I have appeared to you for this purpose: to appoint you a servant and a witness both of the things which you have seen, and of the things which I will reveal to you;
1 Timothy 4:1
But the Spirit says expressly that in later times some will fall away from the faith, paying attention to seducing spirits and doctrines of demons,
2 Peter 3:3
knowing this first, that in the last days scoffers will come, mocking and walking after their own lusts,