Psalm 24:3-5 Who shall ascend into the hill of the Lord? Or who shall stand in his holy place? he that hath clean hands and a pure heart; who has not lifted up his soul unto vanity, nor sworn deceitfully. He shall receive the blessing from the Lord, and righteousness from the God of his salvation.
Our response to God is to aspire to come into His heavenly dwelling place, to enter into the Presence of the Lord, to live with God all the days of our life, and to go to heaven at the end. We cannot enter into God’s Presence, or even talk to Him, unless we come with clean hands and a pure heart, for God is Holy and can tolerate nothing less from us.
But we are sinners in thought, word, and deed (heart, hands, and lies). But the Lord still loves us, and He has provided a way to be cleansed, purified, and holy. Before entering the temple to pray and worship we must bring an animal sacrifice of blood. The blood sacrifice forgives and cleanses so that we can stand in His holy presence in the temple.
So for NT believers, the once and for all blood sacrifice of the Lamb of God on the cross cleanses from all sin, cleans the hands and lips, and purifies the heart. By faith in Christ we can and may stand in His holy place and enjoy a relationship with our Holy, Almighty God and Father. And the Holy Spirit implants that faith in the heart through the hearing of the Gospel. By faith we come and by faith we stand and by faith we talk with Him. Every Sunday and every morning we enter into His temple, which is our body, where God dwells. There He forgives, loves, listens, cares, and gives blessing and righteousness. For through faith we have clean hands and a pure heart.