One of the reasons that God raised Jesus from the dead involves believers like you and me. Paul states, “And as for the fact that he raised him from the dead, no more to return to corruption, he has spoken in this way, ‘I will give you the holy and sure blessings of David’” (Acts 13:34 ESV).
In the phrase “he raised him,” it is the Father who raised Jesus. The “he” who “has spoken” is the Father who spoke in Isaiah 55:3, the quotation that ends Acts 13:34. But when the Father says, “I will give you the holy and sure blessings of David,” the “you” is plural, just as in the Hebrew of Isa 55:3. This “you” refers to the readers of Isaiah, and for Paul, his listeners, both Jews and Gentiles (cf. Acts 13:13–16).
In other words, this quotation of Isa 55:3 does not directly prophesy the resurrection of Christ as, say, Ps 16:10, quoted in Acts 13:35. It does, however, imply that there must be a resurrection because of what is promised. If the Christ had been put to death (cf. Acts 13:26–29), then He would necessarily be raised from the dead in order for God’s people to enjoy the blessings promised to them.
And just what are these blessings? In Isa 55, they involve hearing God, coming to Him, and finding life for the soul (Isa 55:3a). They include forsaking unrighteous thoughts to think the thoughts of God and find pardon and compassion in Him (Isa 55:6–9). These are the blessings of salvation that come from repenting of one’s sin and placing one’s faith in Christ in order to find forgiveness and freedom in Him (cf. Acts 13:38–39).
Isaiah promised these spiritual blessings through the Davidic King all throughout his book. The child who would sit on David’s throne would eliminate gloom, anguish, and darkness and give light, joy, and peace instead (Isa 9:1–7). The shoot from the stump of Jesse would judge the poor with perfect righteousness, treat the meek with equity, and rid His enemies with a word (Isa 11:1–4). The chosen Servant would bring justice to the nations, establish His law upon the earth, and be the light that opens blind eyes, frees the prisoners, and breaks them out of their dungeons (Isa 42:1–7). He would be the Servant who brings Israel back to God and be the light who brings salvation to the ends of the earth (Isa 49:1–6). His proclamation has been and continues to be good news to the poor, healing for the brokenhearted, and liberty to the captives (Isa 61:1–3).
If God has promised these blessings to His people by means of the covenant He made with David, then He has promised to them through Jesus, the Davidic King. If the King was killed, then God had to raise Him from the dead. Only then could we still receive the blessings promised to us.
Praise God that Jesus was raised for us to have eternal spiritual blessings through Him!