24 He boasts that David bought his wife for two hundred foreskins. But he should remember that David had numerous other wives, and afterwards received Michal, Saul's daughter, whom her father had delivered to another, and when he was old got heat from the embrace of the Shunammite maiden. And I do not say this because I am bold enough to disparage holy men, but because it is one thing to live under the law, another to live under the Gospel. David slew Uriah the Hittite and committed adultery with Bathsheba.
And because he was a man of blood— the reference is not, as some think, to his wars, but to the murder— he was not permitted to build a temple of the Lord. But as for us, if we cause one of the least to stumble, and if we say to a brother Raca, or use our eyes improperly, it were good that a millstone were hanged about our neck, we shall be in danger of Gehenna, and a mere glance will be reckoned to us for adultery. He passes on to Solomon, through whom wisdom itself sang its own praises.
Seeing that not content with dwelling upon his praises, he calls him uxorious, I am surprised that he did not add the words of the Canticles: “There are threescore queens, and fourscore concubines, and maidens without number,” and those of the First Book of Kings; And he had seven hundred wives, princesses, and three hundred concubines, and others without number. These are they who turned away his heart from the Lord: and yet before he had many wives, and fell into sins of the flesh, at the beginning of his reign and in his early years he built a temple to the Lord.
For every one is judged not for what he will be, but for what he is. But if Jovinianus approves the example of Solomon, he will no longer be in favour of second and third marriages only, but unless he has seven hundred wives and three hundred concubines, he cannot be the king's antitype or attain to his merit. I earnestly again and again remind you, my reader, that I am compelled to speak as I do, and that I do not disparage our predecessors under the law, but am well aware that they served their generation according to their circumstances, and fulfilled the Lord's command to increase, and multiply, and replenish the earth.
And what is more they were figures of those that were to come. But we to whom it is said, “The time is shortened, that henceforth those that have wives may be as though they had none,” have a different command, and for us virginity is consecrated by the Virgin Saviour.
Source: Against Jovinianus (New Advent)