A mistake the Israelites made in interpreting God’s promise to give them an eternal kingdom was thinking a mortal man could rule such a kingdom. Jeremiah spoke of the true king that would one day fulfill God’s promise to king David. He said, “Behold, the days come saith the LORD that I will raise unto David a righteous Branch, and a King shall reign and prosper and shall execute judgment and justice in the earth” (Jeremiah 23:5). Even though Jesus was the man spoken of in Jeremiah’s prophecy, his death on the cross was a clear demonstration of his mortal limitations. God’s reference to days to come was meant to convey a time period that was beyond Jesus’ earthly existence.
Perhaps a clue to the unique nature of the true king and his kingdom was the title or position he would be known by. Jeremiah referred to him as a righteous Branch and said, “this is his name whereby he shall be called, THE LORD OUR RIGHTEOUSNESS” (Jeremiah 23:5-6). Jesus did not need to be made righteous, he was the only man without sin, but in order for him to be our righteousness Jesus had to pay the penalty for every sin committed against God. When Jesus died on the cross, the penalty was paid for sins that had not yet be committed, therefore, the delay of his reign on earth is due to the continued conversion of sinners.
At some point, the last person to accept God’s free gift of salvation will signal the end of the age we currently live in. Only God knows when that will happen. Afterward, God will pick up where he left off in his plan of salvation for his chosen people. The Messiah’s reign on earth, also known as the Millennial reign of Christ, will be characterized by a return of the nation of Israel as it existed before the Assyrian and Babylonian exiles. Referring to the Messiah’s reign, Jeremiah said, “In his days Judah shall be saved, and Israel shall dwell safely” (Jeremiah 23:6). God’s goal of regathering his people and establishing a permanent kingdom on earth will then be accomplished. Jeremiah declared, “Therefore behold, the days come, saith the LORD, that they shall no more say, The LORD liveth, which brought up the children of Israel out of the land of Egypt; but, The LORD liveth, which brought up and which led the seed of the house of Israel out of the north country, and from all countries whither I had driven them, and they shall dwell in their own land.