What does the Bible say about clean hands and a pure heart?

Psalm 24:3-5 emphasizes that only those with clean hands and a pure heart are righteous enough to ascend to the hill of the Lord. This condition highlights the necessity of purity and righteousness in approaching God. However, it is essential to recognize that none of the sons of Adam can fulfill this requirement on their own; it is Christ alone who embodies this perfect righteousness. He, as the righteous one, fulfills the law perfectly and grants his righteousness to those whom the Father has given him, making them acceptable before God.