Yea, it seems that there was a special dedication of families to God. And therefore we read so frequently of households converted and baptized: though none at age were baptized, but such as seemed believers; yet when they professed faith, they were all together initiated as a household. And it seems, the master's interest and duty were taken to be so great for the conversion of the rest, that as he was not content himself with his own conversion, but to labour presently, even before his baptism, that his household should join with him, that so the whole family at once might be devoted to God; so God did bless this his own order and ordinance to that end: and where he imposed duty on masters, he usually gave success, so that commonly the whole family was converted and baptized with the ruler of the family. So Acts xviii. 8, "Crispus believed on the Lord with all his house, and they were baptized;" and Acts xvi. 32, Paul promiseth the jailer, "Believe on the Lord Jesus Christ, and thou shalt be saved and thy house; and he and all his were baptized straightway; for he believed in God with all his house," ver. 33, 34. And Lydia is described a "worshipper of God," Acts xvi. 14; and ver. 15, "she was baptized and her household." And the angel told Cornelius, that Peter should tell him "words whereby he and all his household should be saved," who were baptized accordingly, Acts xi. 14. And 1 Cor. i. 16, Paul baptized the household of Stephanas. And Christ told Zaccheus, salvation was come that day unto his house, "and he and all his household believed." So that nobleman, John iv. 53. Therefore when Christ sent forth his disciples, he saith, "If the house be worthy, let your peace come upon it, but if it be not worthy, let your peace return to you." So that as it is apparently the duty of every christian sovereign, to do what he is able to make all his people God's people; and so to dedicate them to God as a holy nation, in a national covenant, as the Israelites were: so is it the unquestionable duty of every christian ruler of a family, to improve his interest, power, and parts to the uttermost, to bring all his family to be people of Christ in the baptismal covenant, and so to dedicate all his family to Christ. Yet further I prove this, in that believers themselves being all sanctified to God, it must needs follow, that all their lawful relations, and especially all commanded states of relation, are also sanctified to God; for when themselves are dedicated to God, it is absolutely without reserve, to serve him with all that they have, and in every relation and capacity that he shall set them. It were a madness to think, that a christian totally devoted unto God when he is a private man, if he were after made a soldier, a minister, a magistrate, a king, were not bound by his dedication now to serve God as a soldier, a minister, a magistrate, a king. So he that is devoted to God in a single state, is bound to serve him as a husband, a father, a master, when he comes into that state: we do devote all that we have to God, when we devote ourselves to him.
Moreover the Scripture tells us, that to "the pure all things are pure," Tit. i. 15, 16. And "all things are sanctified to them by the word and prayer," 1 Tim. iv. 5; which is in that they are made the goods and enjoyments, actions and relations of a sanctified people, who are themselves devoted or sanctified to God: so that all sanctification referreth ultimately and principally to God; _Quod sanctum Deo sanctum est_; though it may be said subordinately to be sanctified to us. Seeing then it is past all doubt that every christian is a man sanctified and devoted to God, and that whenever any man is so devoted to God, he is devoted to serve him to the utmost capacity in every state, relation, or condition that he is in, and with all the faculties he possesseth, it followeth that those relations are sanctified to God, and in them he ought to worship him and honour him.