Psalms 125:2

All those minds shall be truly stayed, that are stayed on God. They shall be as Mount Zion, firm as it is; a mountain supported by providence, much more as a holy mountain supported by promise. They cannot be removed from confidence in God. They abide for ever in that grace which is the earnest of their everlasting continuance in glory. Committing themselves to God, they shall be safe from their enemies. Even mountains may moulder and come to nothing, and rocks be removed, but God's covenant with his people cannot be broken, nor his care of them cease. Their troubles shall last no longer than their strength will bear them up under them. The rod of the wicked may come, may fall upon the righteous, upon their persons, their estates, their liberties, their families names, on any thing that falls to their lot; only it cannot reach their souls. And though it may come upon their lot, it shall not rest thereon. The Lord will make all work together for their good. The wicked shall only prove a correcting rod, not a destroying sword; even this rod shall not remain upon them, lest they distrust the promise, thinking God has cast them off.

As the mountains are round about Jerusalem, so the LORD is round about his people from henceforth even for ever. The hill of Zion is the type of the believer's constancy, and the surrounding mountains are made emblems of the all surrounding presence of the Lord. The mountains around the holy city, though they do not make a circular wall, are, nevertheless, set like sentinels to guard her gates. God doth not enclose his people within ramparts and bulwarks, making their city to be a prison; but yet he so orders the arrangements of his providence that his saints are as safe as if they dwelt behind the strongest fortifications. What a double security the two verses set before us! First, we are established, and then entrenched; settled, and then sentinelled: made like a mount, and then protected as if by mountains. This is no matter of poetry, it is so in fact; and it is no matter of temporary privilege, but it shall be so for ever. Date when we please, "from henceforth" Jehovah encircles his people: look on as far as we please, the protection extends "even for ever." Note, it is not said that Jehovah's power or wisdom defends believers, but he himself is round about them: they have his personality for their protection, his Godhead for their guard. We are here taught that the Lord's people are those who trust him, for they are thus described in the first verses: the line of faith is the line of grace, those who trust in the Lord are chosen of the Lord. The two verses together prove the eternal safety of the saints: they must abide where God has placed them, and God must for ever protect them from all evil. It would be difficult to imagine greater safety than is here set forth.