One witness shall not rise up, etc. - See Numbers 35:30 (note).

a false witness

Exodus 23:1-7 You shall not raise a false report: put not your hand with the wicked to be an unrighteous witness...

1 Kings 21:10-13 And set two men, sons of Belial, before him, to bear witness against him, saying, You did blaspheme God and the king...

Psalm 27:12 Deliver me not over to the will of my enemies: for false witnesses are risen up against me, and such as breathe out cruelty.

Psalm 35:11 False witnesses did rise up; they laid to my charge things that I knew not.

Mark 14:55-59 And the chief priests and all the council sought for witness against Jesus to put him to death; and found none...

Acts 6:13 And set up false witnesses, which said, This man ceases not to speak blasphemous words against this holy place, and the law:

that which is wrong. or, falling away

What the Ruler's Discrimination Should be Between Correction and Connivance, Between Fervour and Gentleness.
It should be known too that the vices of subjects ought sometimes to be prudently connived at, but indicated in that they are connived at; that things, even though openly known, ought sometimes to be seasonably tolerated, but sometimes, though hidden, be closely investigated; that they ought sometimes to be gently reproved, but sometimes vehemently censured. For, indeed, some things, as we have said, ought to be prudently connived at, but indicated in that they are connived at, so that, when the …
Leo the Great—Writings of Leo the Great