Luke 2:42

2:42 When he was twelve years old, they went up according to custom.

Luke 1:9

1:9 he was chosen by lot, according to the custom of the priesthood, to enter the holy place of the Lord and burn incense.

Luke 22:39

On the Mount of Olives

22:39 Then Jesus went out and made his way, as he customarily did, to the Mount of Olives, and the disciples followed him.