Upon reflection, however, we must admit that a man is not condemned as jealous-minded because he is capable of jealousy, but because he has an unjust and unreasonable tendency towards it. It is a narrowing and suspicious quality when it operates without due cause, a vindictive and cruel one when it operates in excessive measure. But what should we think of a parent who felt no jealousy if the heart of his child were stolen from him by intriguing servants or by frivolous comrades? Now, God has called Israel His son, even His firstborn. The truth is that with us jealousy is dangerous and frequently perverted, because we are bad judges of the measure of our own rights, especially when our affections are involved. But some measure of jealousy is the necessary pain of love neglected, love wronged or slighted by those upon whom it has a claim. Jealousy is the shadow thrown where the sunshine of love is intercepted, and it is strong in proportion to the strength of the light. It operates in the heart exactly like the sense of justice in the reason. Justice expects a recompense where it has given service, and jealousy asks for love where it has given affection. And therefore, when God tells us that He is jealous, He implies that He condescends to love us, to look for a return, to desire more from us than outward service. We cannot be jealous concerning things which are indifferent to us. Even the jealousy of rival competitors for business or for place may be measured by the desire of each for that which the other would engross. The politician is not jealous of the millionaire, nor the capitalist of the prime minister. Now, if God is jealous when the enemies of our soul would steal away our loyalty, it surely follows that we shall not be left to contend with those enemies alone: He values us; He is upon our side; He will help us to overcome them. And now we begin to see why this attribute is connected with the second commandment and not the first. The apostate who betakes himself to another god is almost beyond the reach of this tender and intimate emotion: he is still loved, for God loves all men; but yet perhaps the chord is unstrung which trembles responsive to this plaintive note. When a man who confesses God begins to weary of spiritual intercourse with the Lord of spirits, when he can no longer worship One whose actual presence is realised because His voice is heard within, when the likeness of man or brute, or brightness of morning, or marvel of life or its reproductiveness, contents him as a representation of God the invisible, then his heart is beginning to go after the creature, to content itself with artistic loveliness or majesty, to let go the grasp as upon a living hand, by which alone the soul may be sustained when it stumbles, or guided when it would err. To those who are within His covenant—to us, therefore, as to His ancient Israel—He says, “I the Lord thy God am a jealous God.” Because I am “thy God.”