22:15 Those who labor for souls must attain to a deeper, fuller, clearer knowledge of God than can be gained by ordinary effort. They must throw all their energies into the work of the Master. They are engaged in a high and holy calling, and if they gain souls for their hire they must lay firm hold upon God, daily receiving grace and power from the Source of all blessing. "For the grace of God that bringeth salvation hath appeared to all men, teaching us that, denying ungodliness and worldly lusts, we should live soberly, righteously, and godly, in this present world; looking for that blessed hope, and the glorious appearing of the great God and our Saviour Jesus Christ; who gave Himself for us, that He might redeem us from all iniquity, and purify unto Himself a peculiar people, zealous of good works." Titus 2:11-14.