we, or an angel from heaven, preach any other gospel than that which we have preached, let him be accursed_, Gal. i. 7, 8. These are the only doctrines that God will own, because they tend to set forth his perfections, as they were at first communicated by him for that end. 2. We are now to consider the manner in which these doctrines are to be preached. This is laid down in several heads, (1.) Diligently and constantly, in season and out of season, considering this work as the main business of life, that which a minister is to _give himself wholly to_, 1 Tim. iv. 15. and all his studies are to be subservient to this end. He is to rejoice in all opportunities, in which he may lead those whom he is called to minister to, in the way to heaven, and be willing to lay out his strength, and those abilities which God has given him, to his glory. Thus the apostle says, _I would very gladly spend, and be spent for you_, 2 Cor. xii. 14. This argues, that the word is not barely to be preached occasionally, as though it were to be hid from the world, or only imparted, when the leisure or inclination of those who are called thereto, will admit of it. The character which the apostle gives of gospel-ministers, is, that they _watch for the souls of those to whom they minister_; that is, they wait for the best and fittest seasons to inculcate divine truths to them. This is particularly expressed _by preaching the word_, and _being instant in season, and out of season, reproving, rebuking, and exhorting with all long-suffering and doctrine_, 2 Tim. iv. 2. which implies, that it ought to be preached, not only on that day, which God has sanctified for public worship, of which preaching is a part; but on all occasions, when they are apprehensive that the people are desirous to receive and hear it.