16. And oh what abundance of duty is incumbent upon both the parents towards every child for the saving of their souls![4] What uncessant labour is necessary in teaching them the doctrine of salvation! which made God twice over charge them to teach his word diligently (or sharpen them) "unto their children, and to talk of them when they sit in their houses, and when they walk by the way, and when they lie down, and when they rise up," Deut. vi. 6, 7; xi. 19. What abundance of obstinate, rooted corruptions are in the hearts of children, which parents must by all possible diligence root up! Oh how great and hard a work is it, to speak to them of their sins and Saviour, of their God, their souls, and the life to come, with that reverence, gravity, seriousness, and unwearied constancy, as the weight of the matter doth require! and to suit all their actions and carriage to the same ends! Little do most that have children know, what abundance of care and labour God will require of them, for the sanctifying and saving of their children's souls. Consider your fitness for so great a work before you undertake it. 17. It is abundance of affliction that is ordinarily to be expected in the miscarriages of children, when you have done your best, much more if you neglect your duty, as even godly parents too often do. After all your pains, and care, and labour, you must look that the foolishness of some, and the obstinacy of others, and the unthankfulness of those that you have loved best, should even pierce your hearts. You must look that many vices should spring up and trouble you; and be the more grievous by how much your children are the more dear. And oh what a grief it is to breed up a child to be a servant of the devil, and an enemy of God and godliness, and a persecutor of the church of God! and to think of his lying in hell for ever! And alas! how great is the number of such! 18. And it is not a little care and trouble that servants will put you to; so difficult is it to get those that are good, much more to make them good; so great is your duty, in teaching them, and minding them of the matters of their salvation; so frequent will be the displeasures about your work and worldly business, and every one of those displeasures will hinder them for receiving your instructions; that most families are houses of correction or affliction. 19. And these marriage crosses are not for a year, but during life; they deprive you of all hope of relief while you live together. There is no room for repentance, nor casting about for a way to escape them. Death only must be your relief. And therefore such a change of your condition should be seriously forethought on, and all the troubles be foreseen and pondered.