'Deny' in the Bible

He said to all, "If anyone desires to come after me, let him deny himself, take up his cross, and follow me.

Some of the Sadducees came to him, those who deny that there is a resurrection.

He said, "I tell you, Peter, the rooster will by no means crow today until you deny that you know me three times."

The Lord turned, and looked at Peter. Then Peter remembered the Lord's word, how he said to him, "Before the rooster crows you will deny me three times."