John 8:35

The servant. Rather, “the slave” (see on v. 34). The slave’s tenure is not permanent. He may at any time displease his master and be expelled. Not so the son. His master’s blood courses in his veins. He is the heir and remains in the household as long as he lives. The Jews boasted of their descent from Abraham (see on v. 33). But Abraham had two sons, the one of a bondwoman and the other of the freewoman (see the allegory of Gal. 4). The Jews were slaves (see on John 8:34), and hence in danger of being rejected. But the Son could emancipate them by altering their status (see on chs. 3:3, 4; 8:36).