The Old Testament law was given to show man that he could not live up to the perfection required for redemption. Man could not and cannot do anything to save himself. Those living in that time who thought they were doing a good enough job to satisfy God’s requirements for redemption were caught up in prideful thinking. They became so full of pride that they actually added laws to the ones God had already given. We can only assume that they thought they were improving the situation, when, in fact, they were putting burdens on the people. So, God sent His Son, Jesus Christ, who was full of grace and mercy.
14 The Word became flesh and made his dwelling among us. We have seen his glory, the glory of the one and only Son, who came from the Father, full of grace and truth. — John 1:14 NIV
We are saved by grace through faith and Jesus wants to continue to give us grace upon grace.
16 For of His fullness we have all received, and grace upon grace. — John 1:16 NASB
It is this continued gift of grace that allows us to overcome the flesh and submit ourselves to God. Without it, we would be like the religious leaders of ancient times and become so full of pride that we would be useless in spreading the word of God. There is nothing in this world that is worthy of praise when it is compared to the joy and the hope that we have through Jesus Christ.
30 It is because of him that you are in Christ Jesus, who has become for us wisdom from God—that is, our righteousness, holiness and redemption. 31 Therefore, as it is written: “Let the one who boasts boast in the Lord.” — 1 Cor. 1:30, 31 NIV
If anything or anyone in this world brings us greater joy, pleasure and happiness than knowing Jesus, then we are double-minded. We should mourn and wail while asking God to forgive us and bring our focus back on Him and Him alone.