I would also point out, not only how true these things are…but also how godly, reverent and necessary it is to know them. For where they are not known, there can be no faith, nor any worship of God. To lack this knowledge is really to be ignorant of God―and salvation is notoriously incompatible with such ignorance. For if you hesitate to believe, or are too proud to acknowledge, that God foreknows and wills all things, not contingently, but necessarily and immutably, how can you believe, trust and rely on His promises? When he makes promises, you ought to be out of doubt that He knows, and can and will perform, what He promises; otherwise, you will be accounting Him neither as true nor faithful, which is unbelief, and the height of irreverence, and a denial of the most high God! And how can you be thus sure and certain, unless you know that certainly, infallibly, immutably and necessarily, He knows, wills and will perform what He promises? Not only, should we be sure that God wills, and will execute His will, necessarily and immutably; we should glory in the fact as Paul does in Rom. 3- “Let God be true, but every man a liar’ (v.4), and again, ‘Not that the word of God has failed (Rom. 9.6), and in another place, ‘The foundation of God standeth sure, having this seal, the Lord knoweth them that are his’ (2 Tim. 2.19). In Tit. 1 He says: ‘Which God that cannot lie, promised before the world began’ (v.2). And Heb. 11 says: “He that cometh, must believe that God is, and that he is a rewarder of them that hope in him’ (v.6).
If, then, we are taught and believe that we ought to be ignorant of the necessary foreknowledge of God and the necessity of events, Christian faith is utterly destroyed, and the promises of God, and the whole gospel fall to the ground completely; for the Christian’s chief and only comfort in every adversity lies in knowing that God does not lie, but brings all things to pass immutably, and that His will cannot be resisted, altered or impeded. (The Bondage of the Will; pp. 83-84.)