Matthew 7:15
"Beware of the false teachers--men who come to you in sheep's fleeces, but beneath that disguise they are ravenous wolves.
Matthew 10:16
"Remember it is I who am sending you out, as sheep into the midst of wolves; prove yourselves as sagacious as serpents, and as innocent as doves.
Acts 8:3
But Saul cruelly harassed the Church. He went into house after house, and, dragging off both men and women, threw them into prison.
Acts 9:1
Now Saul, whose every breath was a threat of destruction for the disciples of the Lord,
Acts 20:29
I know that, when I am gone, cruel wolves will come among you and will not spare the flock;
Philippians 3:5
circumcised, as I was, on the eighth day, a member of the race of Israel and of the tribe of Benjamin, a Hebrew sprung from Hebrews; as to the Law a Pharisee;