Nothing can hinder him from aiding us
The fullest confidence is available to believers in their suffering because of God’s immutable covenant promise by which He has obliged Himself to believers.
But the inspired writer, calling to remembrance the promises by which God had declared that he would make the Church the object of his special care, and particularly that remarkable article of the covenant, “I will dwell in the midst of you” (Exodus xxv. 8), and, trusting to that sacred and indissoluble bond, has no hesitation in representing all the godly languishing, though they were in a state of suffering and wretchedness, as partakers of this celestial glory in which God dwells. . . . 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.” . . . . 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.
There is always hope, even in the adversities of life, because “the eyes of the Lord are over the righteous, to confirm His covenant towards them by watching for their safety.”
— Peter Lillback, quoting Calvin in The Binding of God, pp. 270-271.