_Arg._ IV. If christian families (besides all the forementioned advantages and obligations) are also societies sanctified to God, then is it God's will that families, as such, should solemnly worship him; but christian families are societies sanctified to God; therefore, &c. The reason of the consequence is, because things sanctified must in the most eminent sort, that they are capable, be used for God. To sanctify a person or thing, is to set it apart, and separate it from a common or unclean use, and to devote it to God, to be employed in his service. To alienate this from God, or not to use it for God, when it is dedicated to him, or sanctified by his own election and separation of it from common use, is sacrilege. God hath a double right (of creation and redemption) to all persons. But a treble right to the sanctified. Ananias his fearful judgment was a sad example of God's wrath, on those that withhold from him what was devoted to him. If christian families as such be sanctified to God, they must as such worship him in their best capacity. That christian families are sanctified to God I prove thus: 1. A society of holy persons must needs be a holy society. But a family of christians is a society of holy persons; therefore, 2. We find in Scripture not only single persons, but the societies of such, sanctified to God. Deut. vii. 6, "Thou art an holy people unto the Lord thy God; he hath chosen thee to be a special people to himself above all people that are upon the face of the earth." So Deut. xiv. 20, 21. So the body of that commonwealth did all jointly enter into covenant with God, and God to them, Deut. xxix.; xxx.; and xxvi. 17-19, "Thou hast vouched the Lord this day to be thy God, and to walk in his ways; and the Lord hath vouched thee this day to be his peculiar people, that thou mayst be an holy people to the Lord." So chap. xxviii. 9; Dan. viii. 24; xii. 7. Joshua, chap. xxiv. devoteth himself and his house to the Lord; "I and my house will serve the Lord." And Abraham by circumcision (the covenant, or seal of the covenant of God) consecrated his whole household to God; and so were all families after him to do (as to the males, in whom the whole was consecrated). And whether besides the typifying intent, there were not somewhat more in the sanctifying of all the first-born to God, who if they lived, were to be the heads of the families, may be questioned.