Thy way, O God, is in the sanctuary: who is so great a God as our God?
Thy way, O God - i:e., Thy course of action.
Is in the sanctuary - in the heavenly holy place (Habakkuk 2:20; Psalms 11:4; Psalms 18:6; Psalms 29:2 (margin), 9). Thy way is in heaven, exalted far above our ways (Isaiah 55:9). As the people, and even the Levites and the priests themselves, except at times, were not permitted to see the sacred things in the inner sanctuary (Leviticus 16:2; Numbers 4:15; Numbers 4:20) (Ainsworth). Thy way is understood rightly in thy Church, but not among the people of the world (Belgian version) (Psalms 73:17). Or, thy way is always holy, though we do not always comprehend it; and at present thy dealings may seem hard toward us. 'Thy way is in holiness' - i:e., thy doing rests upon holiness: is holy, and elevated far above all that is creaturely, much less sinful. This is favoured by the passage, which may have been before the Psalmist's mind, Exodus 15:11, "Who is like thee, glorious in holiness ... doing wonders!" (cf. Psalms 22:3; but Psalms 73:17 favours the English version).
Who is so great a God as our God? - (Exodus 15:11; Deuteronomy 3:24.) 'He does not hereby recognize the existence of other gods, but pours contempt upon the foolishness of the world for not being more careful to cultivate the friendship of the One God whose glory is so manifest' (Calvin).