Psalms 74:2

Remember Thy congregation, not only thinking of it in mercy, but showing His favor in deeds of kindness, which Thou hast purchased of old, which had become His possession by the deliverance from the serfdom of Egypt; the rod of Thine inheritance, the tribe or nation of His possession, which Thou hast redeemed, this statement pointing both backward to the purchase out of Egypt's slavery and forward to the eternal redemption by Jesus Christ; this Mount Zion, His own holy Church of all times, wherein Thou hast dwelt. Note the climax in the terms to denote the relation of God to the people of His covenant.