The oath - This oath is recorded in Genesis 22:16-17. It was an oath in which God swore by himself (because he could swear by no greater, Hebrews 6:13-14) that he would surely bless Abraham and his posterity. That promise was now to be entirely fulfilled by the coming of the Messiah.

The oath which he swore to our father Abraham. When he swore by himself, because he could swear by no greater, that in blessing he would bless him; that his seed should possess the gates of his enemies, and in it all the nations of the earth should be blessed: all which have been fulfilled in Jesus the Messiah; see Genesis 22:16.

The oath which he sware to our father Abraham,

1:73 The oath. This oath is recorded in Ge 22:16-17. It was an oath in which God swore by himself, because he could swear by no greater (Heb 6:13,14), that he would surely bless Abraham and his posterity; that promise was now to be entirely fulfilled by the coming of the Messiah.

73. the oath . to . Abraham-The whole work and kingdom of Messiah is represented as a mercy pledged on oath to Abraham and his seed, to be realized at an appointed period; and at length, in "the fulness of the time," gloriously made good. Hence, not only "grace," or the thing promised; but "truth," or fidelity to the promise, are said to "come by Jesus Christ" (Joh 1:17).

1:67-80 Zacharias uttered a prophecy concerning the kingdom and salvation of the Messiah. The gospel brings light with it; in it the day dawns. In John the Baptist it began to break, and increased apace to the perfect day. The gospel is discovering; it shows that about which we were utterly in the dark; it is to give light to those that sit in darkness, the light of the knowledge of the glory of God in the face of Jesus Christ. It is reviving; it brings light to those that sit in the shadow of death, as condemned prisoners in the dungeon. It is directing; it is to guide our feet in the way of peace, into that way which will bring us to peace at last, Ro 3:17. John gave proofs of strong faith, vigorous and holy affections, and of being above the fear and love of the world. Thus he ripened for usefulness; but he lived a retired life, till he came forward openly as the forerunner of the Messiah. Let us follow peace with all men, as well as seek peace with God and our own consciences. And if it be the will of God that we live unknown to the world, still let us diligently seek to grow strong in the grace of Jesus Christ.