God of gods, and Lord of lords - That is, He is the source whence all being and power proceed; every agent is finite but himself; and he can counteract, suspend, or destroy all the actions of all creatures whensoever he pleases. If he determine to save, none can destroy; if he purpose to destroy, none can save. How absolutely necessary to have such a God for our friend!

A great God - mighty - האל הגבר hael haggibbor, the mighty God; this is the very title that is given to our blessed Lord and Savior, Isaiah 9:6.

For the Lord your God is God of gods,.... Of angels and civil magistrates, who are sometimes so called: these are his creatures, act for him and under him, and are accountable to him:

the Lord of lords; of the kings and princes of the earth, who have their crowns, sceptres, and kingdoms from him, and hold them of him, by and under whom they reign and decree judgment, and who are subject to his authority and control:

a great God; as the perfections of his nature, the works of his hands, the blessings of his providence and grace, and the extensiveness of his dominion in heaven, earth, and hell, show him to be:

a mighty and a terrible; mighty and powerful to help, protect, and defend his people; terrible to his and their enemies, even to the kings of the earth:

which regardeth not persons; but bestows his favours, whether in a way of providence or grace, according to his sovereign will and pleasure, without regard to the works and merits of men, their characters or circumstances:

nor taketh reward; or bribes, to avert threatened and deserved judgments; see Job 36:18.

For the LORD your God is God of gods, and Lord of lords, a great God, a mighty, and a terrible, which regardeth not persons, nor taketh reward:

10:17 Regardeth not persons - Whether Jews or Gentiles, but deals justly and equally with all sorts of men; and as whosoever fears and obeys him shall be accepted, so all incorrigible transgressors shall be severely punished, and you no less than other people: therefore do not flatter yourselves as if God would bear with your sins because of his particular kindness to you or to your fathers.

10:12-22 We are here taught our duty to God in our principles and our practices. We must fear the Lord our God. We must love him, and delight in communion with him. We must walk in the ways in which he has appointed us to walk. We must serve him with all our heart and soul. What we do in his service we must do cheerfully, and with good will. We must keep his commandments. There is true honour and pleasure in obedience. We must give honour to God; and to him we must cleave, as one we love and delight in, trust in, and from whom we have great expectations. We are here taught our duty to our neighbour. God's common gifts to mankind oblige us to honour all men. And those who have themselves been in distress, and have found mercy with God, should be ready to show kindness to those who are in the like distress. We are here taught our duty to ourselves. Circumcise your hearts. Cast away all corrupt affections and inclinations, which hinder you from fearing and loving God. By nature we do not love God. This is original sin, the source whence our wickedness proceeds; and the carnal mind is enmity against God, for it is not subject to the law of God, neither indeed can be; so then they that are in the flesh cannot please God, Ro 8:5-9. Let us, without delay or reserve, come and cleave to our reconciled God in Jesus Christ, that we may love, serve, and obey him acceptably, and be daily changed into his image, from glory to glory, by the Spirit of the Lord. Consider the greatness and glory of God; and his goodness and grace; these persuade us to our duty. Blessed Spirit! Oh for thy purifying, persevering, and renewing influences, that being called out of the state of strangers, such as our fathers were, we may be found among the number of the children of God, and that our lot may be among the saints.