John 8:33-36

They answered him Namely, the other Jews that were present, not those that believed, as appears by the whole tenor of the conversation; We be Abraham's seed A person always free, and a peculiar favourite of Heaven; and were never in bondage to any man A bold, notorious untruth. At that very time they were in bondage to the Romans, and their ancestors had been slaves, first in Egypt, and afterward in Assyria and Babylon. How sayest thou, Ye shall be made free Upon becoming thy disciples? Jesus answered, Whosoever committeth sin Greek, ποιων αμαρτιαν, worketh, or acteth known sin; is the servant Δουλος, the slave; of sin Namely, as far as he knowingly commits it. And the servant Or slave; abideth not in the house for ever That is, as a person who is only a slave in a family, does not abide always in the house of his master, but is liable to be dismissed at his lord's pleasure, or transferred to another; much less can you, who are the servants, not of God, but of sin, promise yourselves, that ye shall still, on account of your descent from Abraham, continue in the possession of those privileges, which, by undeserved mercy, you hitherto enjoy; but the Son abideth ever The eldest son and heir of the family continually abides in his Father's house: and his power and influence there are always increasing. The casting out of Ishmael, though a son of Abraham by the bond-woman, beautifully illustrates this exposition of the passage, and the connection. Dr. Macknight paraphrases the verse thus: “As a slave cannot be so assured of his master's favour as to depend upon it, that he shall never be turned out of the family, since it is always his master's right, and in his power, to sell or keep him, as he shall think fit, so my Father can, when he pleases, turn you, who are habitual sinners, out of his family, and deprive you of the outward economy of religion, in which you glory, because through sin you have made yourselves bondmen to his justice. Whereas, if you will become God's children, you shall be sure of remaining in his family for ever. And the only way to arrive at the blessed relation, is to submit to the authority of his Son, in which case the Son will adopt you as co-heirs with himself.” If, therefore, I, who am the only-begotten Son of God, and the heir of all things, and who have power of receiving whom I will into the family, shall make you free You, claiming in virtue of my right and authority, will be free indeed Free from the slavery of sin, the tyranny of Satan, and the bondage of corruption; free to do good, free in respect of your right to the inheritance, and free in your possession of present privileges, remaining in the house of God without danger of being ever thrust out. Archbishop Tillotson is of opinion, that this alludes to a custom in some of the cities of Greece, and elsewhere, whereby the son and heir had the liberty to adopt brethren, and give them the privileges of the family. “But I rather imagine,” says Dr. Macknight, “that the allusion is to something more generally known. For, as in all countries the sons succeed their fathers in the possession of their estates, such slaves as gained the good-will of the son by their obliging behaviour during his minority, were sure to be well treated by him when he came to his estate; perhaps might in time obtain their freedom, and even some small share of the inheritance itself.”