 We need someone who was with us from the start of Jesus' ministry and who was with us all the way to the very end. But most importantly, what is the purpose of replacing this Judas? It's not actually, so you can have a good biblical number like 12, which is a good biblical number. You've got the 12 tribes, the 12 disciples, 12 shows up all over the place. But no, the reason why they need to replace Judas is given to us in verse 22.