Exodus 20:6

And showing mercy unto thousands - Mark; even those who love God and keep his commandments merit nothing from him, and therefore the salvation and blessedness which these enjoy come from the mercy of God: Showing mercy, etc. What a disproportion between the works of justice and mercy! Justice works to the third or fourth, mercy to thousands of generations! The heathen had maxims like these. Theocritus also teaches that the children of the good shall be blessed because of their parents' piety, and that evil shall come upon the offspring of the wicked: -

Ευσεβεων παιδεσσι τα λωΐα, δυσσεβεων δ' ου.

Idyll. 26, v. 32.

Upon the children of the righteous fall

The choicest blessings; on the wicked, wo.

That love me, and keep my commandments - It was this that caused Christ to comprise the fulfillment of the whole law in love to God and man; see Clarke's note on Exodus 20:1. And as love is the grand principle of obedience, and the only incentive to it, so there can be no obedience without it. It would be more easy even in Egyptian bondage to make brick without straw, than to do the will of God unless his love be shed abroad in the heart of the Holy Spirit. Love, says the apostle, is the fulfilling of the law; Romans 13:10.

Unto thousands - unto the thousandth generation. Yahweh's visitations of chastisement extend to the third and fourth generation, his visitations of mercy to the thousandth; that is, forever. That this is the true rendering seems to follow from Deuteronomy 7:9; Compare 2 Samuel 7:15-16.