14Then one of the twelve, called Judas Iscariot, went unto the chief priests, 15And said unto them, What will ye give me, and I will deliver him unto you? And they covenanted with him for thirty pieces of silver.

Betray:

to break someone’s trust, often by being disloyal, dishonest, or unfaithful, and causing them harm in the process. It involves a violation of the expectations and promises that form the foundation of a relationship or commitment.