John 5:1
1After these things, there was a feast of the Jews, and Jesus went up to Jerusalem.
The feast draws Jesus into Jerusalem—into the path of the needy and of those who will oppose him. Grace here is public approach, not a hidden aside: the Son goes up to meet historical people in misery.
The feast is the appointed scene. Jesus does not stumble into a random mercy; the Father’s work is already underway, and the Son goes up in step with that purpose.