The Law of the LORD has several nuanced meanings referring to the total body of God’s commands and instruction, to the narrower part of that body-the Pentateuch or first five books of the Moses, or simply the Ten Commandments. When God commanded Joshua to meditate on “the book of the law”, it undoubtably meant the five books of Moses. By the time of the psalmist, it would have included the histories of Joshua and Judges and perhaps some part of the Samuels and Chronicles.
Among its many purposes, the law reveals God’s righteousness and our wickedness, God’s will and our resistance to it, the way of life and of death, and points us to Christ (Galatians 3:24-25). We have so much more in the canon of God’s completed revelation, and by the Holy Spirit we are enabled to fulfill the works of the law (Romans 8:3-4). We are no longer under the curse of the law, but the law of liberty or law of Christ (James 1:25, Galatians 3:13, 6:2). These direct us. The New Covenant law is not different than the Old Covenant moral law in content, only deeper as it includes matters of the heart- intentions. We may and should meditate on the Law of the LORD both day and night so that “He shall bring forth thy righteousness as the light, and thy judgment as the noonday.” (Psalm 37:6, KJV)
*LORD- YHWH (Yahweh), the I AM (self-existent) covenant keeping God
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