how can a man live?

The Gospel of Matthew says that, after Jesus' arrest by the Roman authorities (but before his execution), the guilt-ridden Judas returned the bribe to the priests and committed suicide by hanging himself.

How can a man live after having killed God's son? Could you live after knowing that you have killed Mahatma Gandhi? or Francis of Assisi?

e Giuda non si e' mai capito bene
se quel bacio fu un tradimento o la piu' grande fedelta'

and as concerns Judas, it was never clear

if that kiss was a betrayal or the deepest faithfulness