It is the character of faith to count on God, not simply in spite of difficulty, but in spite of impossibility.
Faith is not concerned about means; it counts upon the promise of God. To the natural man, the believer may seem to lack prudence; nevertheless, from the moment it becomes a question of means which render the thing easy to man, it is no longer God acting; it is no longer His work where means are looked to.
When, with man, there is impossibility, God must come in; and it is so much the more evidenced to be the right way, since God only does that which He wills.
Faith has reference to His will and to that only; thus it consults not either about means or circumstances; in other words, it consults not with flesh and blood.
When faith is weak, external means are beforehand reckoned on in the work of God.
Let us remember that when things are feasible to man, there is no longer need of the energy of the Spirit.