Verse 21. - He is thy praise, i.e. the Object of thy praise; the Being who had given them abundant cause to praise him, and whom they were bound continually to praise (cf. Psalm 22:3; Psalm 109:1; Jeremiah 17:14). Terrible things; acts which by their greatness and awful effects inspired fear and dread into those by whom they were witnessed. For thee; literally, with thee, i.e. either in thy view or towards thee, for thy behoof (comp. Deuteronomy 1:30; 1 Samuel 12:7; Zechariah 7:9; and such an expression as "deal kindly [literally, do Madness] with," Genesis 24:49, etc.).

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.He is thy praise,.... The object and matter of it, who deserves the praises of all his creatures, because of his perfections, works, and blessings of goodness; for all mercies temporal and spiritual come from him, and therefore he is greatly to be praised for them: praise is his due, and it is comely in his people to give it to him; see Jeremiah 17:14.

and he is thy God which hath done for thee these great and terrible things which thine eyes have seen; which were done upon the Egyptians for their sakes, both in the land of Egypt and at the Red sea; and also what he had done for them in the wilderness, to Sihon and Og, kings of the Amorites, Psalm 106:22.