All these things have I kept. — There is obviously a tone of impatient surprise in the questioner’s reply. He had come seeking some great thing to satisfy his lofty aspirations after eternal life. He finds himself re-taught the lessons of childhood, sent back, as it were, to a lower form in the school of holiness. He had not learnt that to keep any one of those commandments in its completeness is the task of a life, that to keep one perfectly implies keeping all. In marked contrast with this half-contemptuous treatment of the simpler elements of religion we may recall our Lord’s use, in the Temptation, of the three passages connected, directly or indirectly, with those which were written on the phylacteries that men wore, and which would naturally be taught to children as their first lesson in the Law. (See Notes on Matthew 4:1-11.)
What lack I yet? — Ignorant as the young ruler was of his own spiritual state, his condition was not that of the self-satisfied Pharisee. The question implied a dissatisfaction with himself, a sense of incompleteness, as hungering and thirsting after a higher righteousness. And this accounts for the way in which our Lord dealt with him.