I don't know. Who picked Judas to be an apostle?
It wasn't a mistake. Picking Judas led to Christ's Crucifixion, which redeemed you.
"Who picked Judas to be an apostle?"
Maybe Judas was picked to show the sinful nature of man. Especially among those who seem to be Godly. Perhaps there are other Judas' in our Church leadership today. Still betraying Christ.
Just an observation, I'm not an expert on the Church or theology... just a cradle Catholic.