The rich ruler is easy to like. He is sincere, devout and serious about eternal life. He has kept the commandments since he was a boy. He comes to Jesus with a good question. And he goes away sad, because the answer costs more than he can give.
Jesus puts his finger on one thing. For this man, it was his wealth. It might have been something else for someone else: a relationship, an ambition, a comfort, a grudge. Whatever we cannot let go of to follow Jesus has quietly become our master.
The Church year is ending, and soon it begins again at Koodosh Eetho. It is a good moment to ask what one thing stands between us and following Jesus more closely. Letting go feels impossible. Jesus does not deny that. He says only that with God, it is possible.