nothing can hinder God from aiding us

Calvin on Psalm 102:12 "But thou, O LORD, shalt endure for ever; and thy remembrance unto all generations".

When the prophet, for his own encouragement, sets before himself the eternity of God, it seems, at first sight, to be a far-fetched consolation; for what benefit will accrue to us from the fact that God sits immutable on his heavenly throne, when, at the same time, our frail and perishing condition does not permit us to continue unmoved for a single moment? ...What advantage would we derive from this eternity and immutability of God's being, unless we had in our hearts the knowledge of him, which, produced by his gracious covenant, begets in us the confidence arising from a mutual relationship between him and us? The meaning then is, "We are like withered grass, we are decaying every moment, we are not far from death, yea rather, we are, as it were, already dwelling in the grave; but since thou, O God! hast made a covenant with us, by which thou hast promised to protect and defend thine own people, and hast brought thyself into a gracious relation to us, giving us the fullest assurance that thou wilt always dwell in the midst of us, instead of desponding, we must be of good courage; and although we may see only ground for despair if we depend upon ourselves, we ought nevertheless to lift up our minds to the heavenly throne, from which thou wilt at length stretch forth thy hand to help us."

Whoever is in a moderate degree acquainted with the sacred writings, will readily acknowledge that whenever we are besieged with death, in a variety of forms, we should reason thus: As God continues unchangeably the same—"without variableness or shadow of turning"—nothing can hinder him from aiding us; and this he will do, because we have his word, by which he has laid himself under obligation to us, and because he has deposited with us his own memorial, which contains in it a sacred and indissoluble bond of fellowship.