Jesus’ answer is far more than a clever summary of all the commandments.
It is the fundamental commandment underlying the whole economy of redemption.
That is why Christ came.
That is the purpose God had in saving man, that the Father might be loved for his own blessed sake.
Such a plea for love was lost upon people like the Pharisees.
A bleeding child might have pleaded for the affection of a mad dog with the same results!
In a technical sense, all the law and prophets do hang on the twin injunctions Christ named before the Pharisees.
The fifth commandment might go in either group.
A profoundly significant deduction required by Christ’s words on that occasion is that man’s heavenward duties are more important, ranking higher, than his man-ward duties.
The first commandment is to love the Lord; the second is to love thy neighbor.
This, of course, is utterly different from the prevailing concept that lays great stress on human obligations such as “Thou shalt not kill,” etc., but makes the other class of religious obligations secondary.