Instructions concerning a King

14 When you have come into the land which the Lord your God is giving you, and have taken it for a heritage and are living in it, if it is your desire to have a king over you, like the other nations round about you; 15 Then see that you take as your king the man named by the Lord your God: let your king be one of your countrymen, not a man of another nation who is not one of yourselves. 16 And he is not to get together a great army of horses for himself, or make the people go back to Egypt to get horses for him: because the Lord has said, You will never again go back that way. 17 And he is not to have a great number of wives, for fear that his heart may be turned away; or great wealth of silver and gold. 18 And when he has taken his place on the seat of his kingdom, he is to make in a book a copy of this law, from that which the priests, the Levites, have in their care: 19 And it is to be with him for his reading all the days of his life, so that he may be trained in the fear of the Lord his God to keep and do all the words of this teaching and these laws: 20 So that his heart may not be lifted up over his countrymen, and he may not be turned away from the orders, to one side or the other: but that his life and the lives of his children may be long in his kingdom in Israel.

Matthew Henry's Commentary on Deuteronomy 17:14-20

Commentary on Deuteronomy 17:14-20

(Read Deuteronomy 17:14-20)

God himself was in a particular manner Israel's King; and if they set another over them, it was necessary that he should choose the person. Accordingly, when the people desired a king, they applied to Samuel, a prophet of the Lord. In all cases, God's choice, if we can but know it, should direct, determine, and overrule ours. Laws are given for the prince that should be elected. He must carefully avoid every thing that would turn him from God and religion. Riches, honours, and pleasures, are three great hinderances of godliness, (the lusts of the flesh, the lusts of the eye, and the pride of life,) especially to those in high stations; against these the king is here warned. The king must carefully study the law of God, and make that his rule; and having a copy of the Scriptures of his own writing, must read therein all the days of his life. It is not enough to have Bibles, but we must use them, use them daily, as long as we live. Christ's scholars never learn above their Bibles, but will have constant occasion for them, till they come to that world where knowledge and love will be made perfect. The king's writing and reading were as nothing, if he did not practise what he wrote and read. And those who fear God and keep his commandments, will fare the better for it even in this world.