Backwoods Presbyterian
Puritanboard Amanuensis
”As to the Apostle’s assigning here a peculiar privilege to the children of believers, this flows from the blessing of the covenant, by the intervention of which the curse of nature is removed; and those who were by nature unholy are consecrated to God by grace. Hence Paul argues, in his Epistle to the Romans, (Romans 11:16,) that the whole of Abraham’s posterity are holy, because God had made a covenant of life with him — If the root be holy, says he, then the branches are holy also. And God calls all that were descended from Israel his sons’ now that the partition is broken down, the same covenant of salvation that was entered into with the seed of Abraham is communicated to us. But if the children of believers are exempted from the common lot of mankind, so as to be set apart to the Lord, why should we keep them back from the sign? If the Lord admits them into the Church by his word, why should we refuse them the sign? In what respects the offspring of the pious are holy, while many of them become degenerate, you will find explained in the tenth and eleventh chapters of the Epistle to the Romans; and I have handled this point there.”
— John Calvin, Commentary on 1 Cor 7:14