When our son, Reuben repeats Psalm 1, he says “But his delight is in the LORD”, instead of “But his delight is in the law of the LORD”. As we attempted to correct him, I realized a profound truth hidden in his expression.
The Psalmist exclaimed that blessed are those who abide by the law of the Lord (Psalm 119:1). Jesus summed up the entire law of the prophets into love for God and love for man (Matthew 22:37-40) and Apostle Paul clearly states in the book to the Romans, that the law of the Lord is fulfilled in love (Romans 13:9-10). This means that to delight in the law of the Lord is to delight in its fulfillment, which is Love and since God is love, to delight in the law of the Lord is to delight in God.
We are to rejoice in the LORD, we are to joy (delight) in the God of our salvation (Habakkuk 3:18) just as much as we need to, in His law that is royal and liberating (James 2:8,12), holy, just, and good (Romans 7:12), spiritual (Romans 7:14) and is the new covenant, written on our hearts and mind (Hebrews 10:16).
Verily, for of children is the kingdom of heaven (Matthew 19:14) and our delight is to be in the law of the LORD and in Him, as our beloved son says.