Verse 9. - Exalt the Lord our God, and worship at his holy hill. Repeated from ver. 5, with the slight variation that "his holy hill" is substituted for "his footstool" - Zion, on which the temple stood, for the sanctuary of the temple itself. For the Lord our God is holy; rather, for holy is the Lord our God (comp. vers. 3 and 5).

99:6-9 The happiness of Israel is made out by referring to the most useful governors of that people. They in every thing made God's word and law their rule, knowing that they could not else expect that their prayers should be answered. They all wonderfully prevailed with God in prayer; miracles were wrought at their request. They pleaded for the people, and obtained answers of peace. Our Prophet and High Priest, of infinitely greater dignity than Moses, Aaron, or Samuel, has received and declared to us the will of the Father. Let us not only exalt the Lord with our lips, but give him the throne in our heart; and while we worship him upon his mercy-seat, let us never forget that he is holy.Exalt the Lord our God,.... Having given the above instances of Moses, Aaron, and Samuel, serving and worshipping the Lord, the psalmist repeats the exhortation in Psalm 99:5, which he enforces by their example; See Gill on Psalm 99:5,

and worship at his holy hill; the holy hill of Zion, the church; attend the public worship and service of it: the Targum is,

"worship at the mountain of the house of his sanctuary; the temple, a type of the church of Christ:''

for the Lord our God is holy; his nature is holy, and he is glorious in the perfection of his holiness, and therefore to be praised and exalted; and his name is holy, and so reverend, and therefore to be worshipped; see in Psalm 99:3.