Then Judas, who betrayed him, seeing that he was condemned, repenting himself, brought back the thirty pieces of silver to the chief priests and ancients, Saying: "I have sinned in betraying innocent blood." But they said: "What is that to us? Look thou to it." And casting down the pieces of silver in the temple, he departed and went and hanged himself with an halter. (Matt. 27:3-5)
SUICIDE is a terrible sin, for he who commits it does not only kill his body, but also his soul, since at the very moment of his death he is committing a mortal sin, and flinging his soul into hell.
[From 'A Practical Commentary on Holy Scripture' by Bishop Knecht, D.D.]
(1899 Douay-Rheims Bible)