I delight to do Thy will, O my God. – Psalm 40:8
Brethren, I believe it is the duty of the Christian church to go on working quite as earnestly and zealously and believingly, if there be no conversions, as if half the world were transformed in a twelve month. Our business is not to create a harvest but to sow the seed; if the wheat does not come up, if we have sown it aright, our Master does not hold us responsible. If missions had been an utter failure it would be no sort of reason why we should give them up. There was a great failure when the hosts of Israel, on the first occasion, went round Jericho; a dreadful failure when they marched round the city twice, and the walls shook not; it was an aggravated failure when they had compassed it four times; it was a most discouraging defeat when they had tramped round it five times; and, on the whole, a breakdown, almost enough to drive them to despair, when they had performed the circuit six times and not a single brick had stirred in the wall. Yes; but then the seventh day made amends, when the people shouted and all the walls fell flat to the ground. Brethren, it is not yet time to shout, but we must continue marching and say, “Let God be magnified.” The longer the walls stand, and the longer we wait, the louder will be our shout when they lie prostrate before us, as they shall; for, “Verily, verily, I say unto you there shall not be one stone left upon another that shall not be cast down.”
Let us still continue to attack the adversary. We are few, but strength lies not in numbers. The Eternal One has used the few where He has put aside the many. In our weakness lies part of our adaptation to the divine work; only let us gather up fresh faith, and renew our courage and industry, and we shall see greater things than these. ~ C.H. Spurgeon
https://www.blueletterbible.org/comm/spurgeon_charles/sermons/1013.cfm