Charles H. Spurgeon on Psalms 89:2

Mercy shall be built up for ever. What is this "mercy" that is "built up for ever"? but the glorious and the gracious scheme, the glorious and the gracious fabric, of our salvation, founded in the eternal purpose of God —carried into execution by the labours and the death of Jesus Christ —and then applied and brought home to the heart by the illuminating and converting power of the Holy Ghost? This is that "mercy" which is "built up for ever." It was planned from everlasting, and will know no ruin or decay, through the illimitable line of eternity itself. Who is the builder of this fabric? Not man's free will. Not man's own righteousness or wisdom. Not human power nor human skill. Every true believer will here join issue with David, that it is God, and God alone, who builds up the temple of his Church; and who, as the builder of it, is alone entitled to all the glory. The elect constitute and form one grand house of mercy: an house, erected to display and to perpetuate the riches of the Father's free grace, of the Son's atoning merit, and of the Holy Ghost's efficacious agency. This house, contrary to the fate of all sublunary buildings, will never fall down, nor ever be taken down. As nothing can be added to it, so nothing can be diminished from it. Fire cannot injure it; storms cannot overthrow it; age cannot impair it. It stands on a rock, and is immovable as the rock on which it stands —the threefold rock of God's inviolable decree, of Christ's finished redemption, and of the Spirit's never failing faithfulness. —Augustus Montague Toplady, 1740-1778.