Your faith will not fail while God sustains it; you are not strong enough to fall away while God is resolved to hold you.
We feel that, for the honour of God (and also, though we do not say this, for the sake of our own reputation as spiritual Christians), it is necessary for us to claim that we are, so to speak, already in the signal-box, here and now enjoying the inside information as to the why and wherefore of God’s doings. This comforting pretence becomes part of us: we feel sure that God has enabled us to understand all His ways with us and our circle thus far, and we take if for granted that we shall be able to see at once the reason for anything that may happen to us in the future. And then something very painful and quite inexplicable comes along, and our cheerful illusion of being in God’s secret councils is shattered. Our pride is wounded; we feel that God has slighted us; and unless at this point we repent, and humble ourselves very thoroughly for our former presumption, our whole subsequent spriritual life may be blighted.
There is nothing more irreligious than self-absorbed religion.
Guidance, like all God's acts of blessing under the covenant of grace, is a sovereign act. Not merely does God will to guide us in the sense of showing us his way, that we may tread it; he wills also to guide us in the more fundamental sense of ensuring that, whatever happens, whatever mistakes we may make, we shall come safely home. Slippings and strayings there will be, no doubt, but the everlasting arms are beneath us; we shall be caught, rescued, restored. This is God's promise; this is how good he is.
Confidence that one's impressions are God-given is no guarantee that this is really so, even when they persist and grow stronger through long seasons of prayer. Bible-based wisdom must judge them.
Only when it is seen that what decides each individual's destiny is whether or not God decides to save him from his sins, and that this is a decision that God need not make in any individual case, can one begin to grasp the biblical view of grace.