The holiest of Christians, and those who understand best the gospel of Christ, find in themselves a constant inclination to look to the power of the creature, instead of looking to the power of God and the power of God alone. Over and over again, Holy Scripture has to remind us of that which we never ought to forget, that salvation is God’s work from first to last, and is not of man, neither by man. But so it is, this old error – that we are to save ourselves, or that we are to do something in the matter of salvation – always rises up, and we find ourselves continually tempted by it to step aside from the simplicity of our faith in the power of the Lord our God.
We, in the matter of salvation, are apt to think that God is tarrying long in the fulfillment of His promise, and we set to work ourselves to do something, and what do we do? Sink ourselves deeper in the mire and pile up for ourselves a store of future troubles and trials. Do we not read that it grieved Abraham’s heart to send Ishmael away? Ah! and many a Christian has been grieved by those works of nature which he accomplished with the design of helping the God of grace. Oh, beloved, we shall find ourselves very frequently attempting the foolish task of assisting Omnipotence and teaching the Omniscient One.
Instead of looking to grace alone to sanctify us, we find ourselves adopting Philosophic rules and principles which we think will effect the Divine work. We shall but mar it; we shall bring grief into our own spirits. But if, instead thereof, we in every work look up to the God of our salvation for help, and strength, and grace, and succor, then our work will proceed to our own joy and comfort, and to God’s glory. That error, then, I say is in our bone, and will always dwell with us, and hence it is that the words of the text are put as an antidote against that error. It is distinctly stated in our text that salvation is of God. “Not for your sakes do I this.” He says nothing about what we have done or can do. All the preceding and all the succeeding verses speak of what God does. “I will take you from among the heathen.” “I will sprinkle clean water upon you.” “I will give you a new heart.” “I will put my Spirit within you.” It is all of God: therefore, again recall to our recollection this doctrine, and give up all dependence upon our own strength and power.
Adapted from “Free Grace,” as published in The Sermons of Charles Spurgeon: Sermons 201-400 (Vol 2 of 4) (Kindle Edition)