Psalm 37:30-31 highlights the central role of God's Word in the life of the righteous. Jim Osman explains that the Word of God is in the believer's mouth, heart, and steps. A righteous person speaks wisdom and justice because God's truth fills their heart, shaping their words and actions. True righteousness is not about external conformity but an inward delight in God's law, which guards and guides the believer's path. This passage emphasizes the transformative power of Scripture—it leads to salvation and sanctifies and preserves the righteous, ensuring that their steps do not slip.