God’s instruction to His people about when they would come into the land that He had promised to give them (Deut. 17:14) and seek to set a king over them concluded with vital teaching (17:18-20). In these three verses, He declared and explained the necessity of the king’s daily interaction with His words.
The king would have to “write him a copy of [God’s] law in a book” (17:18). He then would have to have the copy with him and read in it “all the days of his life” (17:19a-b).
Through such lifelong daily interaction with God’s own words, the king would learn to fear God, as he should, “to keep all the words of this law and these statutes, to do them” (17:19c-d). His reverence and awe for God developed in him by reading God’s words every day of his life would direct him to obey God comprehensively.
Such comprehensive obedience would serve vital purposes in his life: it would keep his heart from becoming “lifted up above his brethren” (17:20a); and it would ensure that he would not deviate from God’s commandments in any way (17:20b). Being humble with respect to his brethren and walking obediently along the straight way of God, he would prolong his reign and that of his children over Israel (17:20c).
From this teaching, we should learn the necessity of our feeding on God’s Word all the days of our lives. Only through such feasting on Scripture itself will be able to fear God, comprehensively obey Him, be humble, and walk in His ways, as we should.
For us to enjoy the quality and length of life that God intends for us, we must richly partake of His words every day and allow that partaking to accomplish all His purposes in our lives. Doing so, our descendants and we will be what God wants us to be: “A chosen generation, a royal priesthood, a holy nation, a peculiar people; that [we] should show forth the praises of Him who hath called [us] out of darkness into His marvellous light” (1 Pet. 2:10)!
Let us read our Bibles all the days of our lives with these things in mind.