'Betrayer' in the Bible

And Judas, the betrayer, said, “Surely it is not I, Rabbi?” Jesus said to him, “You have said it yourself.”

Get up, let us go. Look, My betrayer is near!”

Now the betrayer had given them a sign, saying, “Whomever I kiss, He is the one; seize Him.”

When Judas, His betrayer, saw that Jesus was condemned, he was gripped with remorse and returned the thirty pieces of silver to the chief priests and the elders,