(23) I have sworn by myself.--The highest conceivable form of asseveration (Genesis 22:16; Jeremiah 22:5; Hebrews 6:13).

Unto me every knee shall bow.--The faith of Israel becomes the religion of mankind, though, from the prophet's standpoint, Israel does not lose its distinctive nationality. We note the application of the words to the Christ in Philippians 2:10; Romans 14:11.

Verse 23. - I have sworn by myself (comp. Genesis 22:17; Jeremiah 22:5; Jeremiah 49:15). "God swears "by himself," because he can swear by no greater" (Hebrews 6:13). He condescends, for man's sake, to confirm in this way promises that are exceedingly precious (see the Homiletics on Isaiah 14:24). The word is gone out of my mouth in righteousness. So Dr. Kay and Mr. Cheyne (comp. ver. 19, "I the Lord speak righteousness"). And shall not return; i.e. shall not be withdrawn or retracted. God's gifts and promises are "without repentance." Every knee shall bow, every tongue shall swear. This universal turning to God belongs to the final Messianic kingdom, prophesied in Isaiah 2:2-4; Isaiah 11:6-9; Isaiah 35:1-10; Isaiah 65:17-25; Isaiah 66:18-23; and also by Daniel (Daniel 7:9-14) and St. John the Divine (Revelation 21:1-4). The entire destruction of God's enemies is to take place previously (Revelation 19:17-21).

45:20-25 The nations are exhorted to draw near to Jehovah. None besides is able to help; he is the Saviour, who can save without the assistance of any, but without whom none can save. If the heart is brought into the obedience of Christ, the knee will cheerfully obey his commands. To Christ men shall come from every nation for blessings; all that hate his cause shall be put to shame, and all believers shall rejoice in him as their Friend and Portion. All must come to him: may we now come to him as the Lord our Righteousness, walking according to his commandments.I have sworn by myself,.... Christ being the true God, he could swear by no greater, Hebrews 6:13, this shows that what follows, and is here sworn unto, is of great importance, and strictly true, and would certainly be accomplished:

the word is gone out of my mouth in righteousness; both what goes before, that such that look unto him shall be saved; and also what follows, concerning the subjection of every creature to him; this was what he had resolved in his mind, and declared in his word, by promise and prophecy, should be; and as it was agreeably to truth and justice, it should certainly, and in faithfulness, be performed, and shall not return void and without effect, but be exactly and punctually accomplished:

that unto me every knee shall bow, every tongue shall swear; that is, everyone, or at least the generality of mankind, shall be subject to Christ, embrace his Gospel, submit to his ordinances, profess his name, and serve and worship him; this will be when the fulness of the Gentiles is brought in, and the Jews are converted: the apostle quotes this passage, and applies it to the judgment day, when all, whether they will or not, shall confess that Christ is God, which he so often asserts in this context; see Romans 14:10.