I Love You.

A new commandment I give unto you. He not only commends it as amiable and pleasant, not only counsels it as excellent and profitable, but commands it, and makes it one of the fundamental laws of his kingdom; it goes a-breast with the command of believing in Christ, 1 Jn. 3:23; 1 Pt. 1:22. It is the command of our ruler, who has a right to give law to us; it is the command of our Redeemer, who gives us this law in order to the curing of our spiritual diseases and the preparing of us for our eternal bliss. It is a new commandment; that is,

It is a renewed commandment; it was a commandment from the beginning (1 Jn. 2:7), as old as the law of nature, it was the second great commandment of the law of Moses; yet, because it is also one of the great commandments of the New Testament, of Christ the new Lawgiver, it is called a new commandment; it is like an old book in a new edition corrected and enlarged. This commandment has been so corrupted by the traditions of the Jewish church that when Christ revived it, and set it in a true light, it might well be called a new commandment. Laws of revenge and retaliation were so much in vogue, and self-love had so much the ascendant, that the law of brotherly love was forgotten as obsolete and out of date; so that as it came from Christ new, it was new to the people.

It is an excellent command, as a new song is an excellent song, that has an uncommon gratefulness in it.

It is an everlasting command; so strangely new as to be always so; as the new covenant, which shall never decay (Heb. 8:13); it shall be new to eternity, when faith and hope are antiquated.

As Christ gives it, it is new. Before it was, Thou shalt love thy neighbour; now it is, You shall love one another; it is pressed in a more winning way when it is thus pressed as mutual duty owing to one another. - Matthew Henry