I contributed the following Advent reflection on Acts 2 to the Sovereign Grace Church blog, where this is crossposted:
After the Spirit was poured out at Pentecost, Peter portrays God’s plan for history, and how he was accomplishing this through his son Jesus. As Christmas approaches, this helps us to remember where this baby in a manger was destined: a glorious king, seated on a throne with all things being put in increasing subjection to him, until he delivers the kingdom to the Father.
We recall that the flood was the first and last time God destroyed the earth itself; however, it was not the last time he brought an old creation to an end and established a new creation. To use prophetic and visionary language, in each of his covenants God tore down the sun, moon and stars of one fallen created order, and fashioned out of its very dust a new and better creation. Israel’s great exodus from Egypt was one such miraculous new creation. But even there our separation from God and the sting of the curse were highlighted: at Sinai, God’s glorious presence descended on a lofty mountain, Israel was forbidden to draw near, and only seventy elders could share a meal with God at a distance. Immediately afterwards, Israel fell into sin with the golden calf, and 3000 people were put to death. A newer and better creation was needed!
In his death, resurrection and ascension, Jesus accomplished the last and greatest exodus from the old creation into the final new creation. In contrast with Sinai, at Pentecost God’s glorious presence descended directly on his people, all of whom are now welcome to draw near and commune with him in his own house. 3000 people were then added to God’s house: in Jesus, life, cleansing and healing are now contagious rather than death and curse. The sweep of Peter’s sermon also reminds us that Jesus’s whole life was wrapped up in this mission of “loosing the pangs of death” and of renewing all creation in himself. Not just his death but his life, obedience, teaching, prayers, healings, resurrection and ascension were all working to accomplish the condemnation and destruction of the old creation in its climactic failure, and at the very same time to prepare and begin to transfigure the old creation into the new. Even in the events of his birth we see battle lines beginning to be drawn.
And until the end, it remains a contest of loyalties, a war both without and within. Peter reminds us that we participate in this glorious new creation through identification with Jesus. Repentance breaks allegiance with the old creation and all that is both good and bad in it: we repent for our sin, and even for our attempts to deal with sin and find life apart from Jesus. Faith identifies with Jesus by continually laying hold of his sacrifice for sin and welcoming his rule over all things. Finally, baptism joins us with Jesus in an exodus from the old creation, just as Noah and later all Israel passed through the waters into a new creation.
Let all the house of Israel therefore know for certain that God has made him both Lord and Christ, this Jesus whom you crucified. . . . Repent and be baptized every one of you in the name of Jesus Christ for the forgiveness of your sins, and you will receive the gift of the Holy Spirit.