"Fight the good fight of faith, lay hold on eternal life." 1 Timothy 6:12
It is through faith that the power whereby God keeps his people acts and is made known, and it is very instructive and encouraging to be able to trace in our own hearts the connection between the power of God and the actings of faith. We are not carried to heaven as passengers are carried by the express train to Holyhead, so that if once in the carriage they may go to sleep, look out of the window, or read the newspaper without fear of losing their way, or not reaching their destination. Though kept by the power of God, we have to fight every step of the way.
It is this living, fighting, struggling, and yet eventually conquering faith, which sets the tried and exercised child of God at such a distance from the loose and careless doctrinal professor, who is hardened and emboldened to presume, and even walk in ways of sin and death by holding the doctrine of being kept by the power of God, without knowing anything of the secret way by which this power works and keeps. To such we may adapt the language of James. You believe that the elect of God are kept by his Almighty power unto salvation. "Thou doest well; the devils also believe and tremble"--which you do not if you be one of these loose professors. But does God keep you? Does he keep you from evil, that it may not grieve you? Does he keep your eye single, your conscience tender, your heart prayerful, your life and walk circumspect, your eye from adultery, your tongue from folly, your hands from covetousness, and your feet from the ways of pride and worldliness? You have no evidence that you are an heir of God and are being kept by his power unto salvation, unless you have some experience how he keeps, and that as it is by power on his part, so it is through faith on yours. Whenever we slip, stumble, or go astray, it is through the power of unbelief; and whenever we stand, fight, or prevail, it is by faith.