20 Then he married Maacah, Absalom's daughter, and she bore him Abijah, Attai, Ziza, and Shelomith. 21 Maacah was Rehoboam's favorite wife; he loved her more than all his other wives and concubines put together (and he had a lot - eighteen wives and sixty concubines who produced twenty-eight sons and sixty daughters!). 22 Rehoboam designated Abijah son of Maacah as the "first son" and leader of the brothers - he intended to make him the next king.
Matthew Henry's Commentary on 2 Chronicles 11:20-22
Commentary on 2 Chronicles 11:13-23
(Read 2 Chronicles 11:13-23)
When the priests and Levites came to Jerusalem, the devout, pious Israelites followed them. Such as set their hearts to seek the Lord God of Israel, left the inheritance of their fathers, and went to Jerusalem, that they might have free access to the altar of God, and be out of the temptation to worship the calves. That is best for us, which is best for our souls; in all our choices, religious advantages must be sought before all outward conveniences. Where God's faithful priests are, his faithful people should be. And when it has been proved that we are willing to renounce our worldly interests, so far as we are called to do so for the sake of Christ and his gospel, we have good evidence that we are truly his disciples. And it is the interest of a nation to protect religion and religious people.