Matthew 27:2-5
English Standard Version
3Then when Judas, his betrayer, saw that Jesus was condemned, he changed his mind and brought back the thirty pieces of silver to the chief priests and the elders,
4saying, "I have sinned by betraying innocent blood." They said, "What is that to us? See to it yourself."
5And throwing down the pieces of silver into the temple, he departed, and he went and hanged himself.