It is, indeed, of great consequence to anyone who has become a Christian, and who begins to feel stirring in his breast those impulses to serve God and bless the world which are native to the Christian spirit, to obtain a definite sphere to fill and a definite work to do. Otherwise these God-inspired impulses, expressing themselves in mere words and sentiments, gradually decay through want of exercise, or they are dispersed over so many objects that nothing is done. But, when a special task is obtained, the force of these sentiments is concentrated upon it and transmuted into actual work. The Christian man says: Here is my own task; if I do not accomplish it, no one else can; this is my corner in the great labour-field, which I, and no one else, have to make fruitful and beautiful; I shall be answerable to the Judge of all at the last for the manner in which the work assigned to me is done. Such sentiments had a strong hold of the mind of St. Paul. One of his commonest ways of thinking of his office was as a stewardship, which he was administering, and for which by-and-by he would have to render a reckoning. "And," says he, "it is required in stewards that a man be found faithful."[54] Similarly, he thought of himself as a workman with a certain portion of a temple to build; but the great Taskmaster was coming round in the evening to inspect the work--ay, and even to test it with fire; and, when that testing-time came, he desired to be a workman not needing to be ashamed. All the work of his apostleship appeared to him a curriculum which he had to cover before he could win the prize of the Divine approval. This is his favourite figure of speech, and he applies it in many directions. For example, the athlete in the racecourse has to keep himself in training and to put every muscle on the stretch. So St. Paul felt the obligation to put every power he possessed into his work. "Give thyself wholly to them," he says to a young fellow-labourer about his duties; and what he preached he practised. "Stir up the grace of God that is in thee," he says to the same friend again; and he called on his own nature continually for the utmost exertion of its powers. He was always growing; but the increment of his faculty and influence went all to the same object.