We need to conclude Song #2 as there are additional truths to be noted. For example, note in 49:7 that the nation (singular, thus Israel) despised and abhorred the Redeemer while kings and princes (plural, thus the nations) will worship Him. This rejection by Israel that resulted in the great opportunity for the nations to receive the gospel is the subject of today’s passage from Romans. I say then, have they stumbled that they should fall? Certainly not! But through their fall, to provoke them to jealousy, salvation has come to the Gentiles (11:11). The LORD promised Abraham that through him all the nations would be blessed (Gen. 12:3); but Abraham had no idea how that would play out. Isaiah spoke of it in this Song and then the Apostle Paul explained it in detail.
In 49:8-12 there is a description of what the Messiah Servant’s reward will be. He will rule in His Kingdom where all will prosper and rejoice. In terms of the future picture, perhaps the key words are that the LORD will bring this about “in an acceptable time.” The struggle that the Messiah mentioned in v4, about laboring in vain, will be a part of the story but not the end of the story. And the end with it’s successes will come at an acceptable time, a time of the LORD’s choosing.
I am reminded of Acts 1:7, when Jesus disciples asked Him if He was going to restore the kingdom to Israel at that time. The answer was: It is not for you to know times or seasons which the Father has put in His own authority. It was an acceptable time for Jesus when He came to earth for His first advent. As Paul said, But when the fullness of the time had come, God sent forth His Son, born of a woman, born under the law, to redeem those who were under the law, that we might receive the adoption as sons (Gal. 4:4-5). “Fullness of the time” simple means it was the time for all to be fulfilled concerning Messiah that had been prophesied.
But Paul also said, in Eph. 1:10, that in the dispensation of the fullness of the times He would gather together all things in Christ. The part about Israel rejecting and abhorring the Servant is still in operation. But the time will come when the Servant has received His reward for His ministry. Until that time, the Lord Jesus sits at the right hand of the Father, waiting for the acceptable time (Psalm 110).
You might remember that Paul said something about the “acceptable time” in 2 Cor. 6:1-2. He quoted from Isa. 49:8 and then added, for the Corinthians, these words: Behold, now is the accepted time; behold, now is the day of salvation. From verse 1 he was saying that now is the time to receive God’s grace for salvation. And it is still that time today.