_Motive_ IV. A holy and well-governed family doth tend to make a holy posterity, and so to propagate the fear of God from generation to generation. It is more comfortable to have no children, than to beget and breed up children for the devil. Their natural corruption is advantage enough to Satan, to engage them to himself, and use them for his service: but when parents shall also take the devil's part, and teach their children by precepts or example how to serve him, and shall estrange them from God and a holy life, and fill their minds with false conceits and prejudice against the means of their salvation, as if they had sold their children to the devil; no wonder then if they have a black posterity, that are trained up to be heirs of hell. He that will train up children for God, must begin betimes, before sensitive objects take too deep possession of their hearts, and custom increase the pravity of their nature. Original sin is like the arched Indian fig tree, whose branches turning downwards and taking root, do all become as trees themselves: the acts which proceed from this habitual viciousness, do turn again into vicious habits: and thus sinful nature doth by its fruits increase itself: and when other things consume themselves by breeding, all that sin breedeth is added to itself, and its breeding is its feeding, and every act doth confirm the habit. And therefore no means in all the world doth more effectually tend to the happiness of souls, than wise and holy education. This dealeth with sin before it hath taken the deepest root, and boweth nature while it is but a twig: it preventeth the increase of natural pravity, and keepeth out those deceits, corrupt opinions, and carnal fantasies and lusts, which else would be serviceable to sin and Satan ever after: it delivereth up the heart to Christ betimes, or at least doth bring him a disciple to his school to learn the way to life eternal; and to spend those years in acquainting himself with the ways of God, which others spend in growing worse, and learning that which must be again unlearned, and in fortifying Satan's garrison in their hearts, and defending it against Christ and his saving grace. But of this more anon.