They are constant liars.
Proverbs 6:12 (NLT)
No one who practices deceit shall dwell in my house;
no one who tells lies shall stand in my presence.
Psalm 101:7 (BSB)
Don’t pick a fight without reason, when no one has done you harm.
Proverbs 3:30 (NLT)
Dear friend,
do not imitate what is evil but what is good.
Anyone who does what is good is from God.
Anyone who does what is evil has not seen God.
3 John 1:11 (NIV)
Warn a divisive person once, and then warn them a second time.
After that, have nothing to do with them.
You may be sure that such people are warped and sinful;
they are self-condemned.
Titus 3:10-11 (NIV)
Take no part in the unfruitful works of darkness,
but instead expose them.
Ephesians 5:11 (ESV)
Do not cause anyone to stumble,
whether Jews, Greeks or the church of God.
1 Corinthians 10:32 (NIV)