Thy testimonies are very sure: holiness becometh thine house, O LORD, for ever.
Thy testimonies are very sure - i:e., thy promises to thy people in thy Word are surely to be depended upon (Psalms 19:7). The sureness of His testimony of salvation to His people follows necessarily from His majesty and might, which are far superior to all opposition of blustering enemies, as described in Psalms 93:1-4 (Revelation 19:9; Revelation 21:5; Revelation 22:6).
Holiness becometh thine house ... forever. It is becoming that thou shouldest keep from violation and defilement by the enemy the sanctity of thine own house (Psalms 74:7; Psalms 79:1). The leading thought of the psalm is not what we should do toward God (as if it were, thy house should be kept holy by us), but what He should do for the Church: this is what she pleads before Him, in order to have assurance of His safeguard amidst the blustering assaults of the world. So Psalms 92:1-15 similarly closes with the Church's confident hope from God. The "forever" (literally, for length of days) here, compared with Hebrew, Psalms 23:6, accords with this view. Also the parallel first clause confirms it. God has provided for the sacro-sanctity of His house. If because of His people's sins He suffered the Chaldees to destroy the first temple, He raised in its stead the second. The second for the lifeless formalism of the people, which ended in the awful sin of crucifying the Lord of glory, was destroyed, only to give place to the more glorious spiritual temple of the Holy Spirit, the Christian Church. 'The world did not destroy it, but God Himself took down the poor provisional building, when the proper one was completed' (Hengstenberg). And though its state in the last times before Christ's second advent shall be low indeed, yet it shall rise again with far greater glory than ever, because God's faithfulness is engaged for its sanctity.