God has placed the same Spirit within us that was in the Holy of Holies, the same Spirit that eradicates all uncleanliness. This Spirit makes it possible for God to adopt us and for us to call Him "Father." His sacrifice causes us to love Him and want to respond to Him in purity and righteousness. If we abandon God for His gifts or become satisfied hearing about Him from someone else, He will not accept us.
Romans 8:15-17; Deuteronomy 6:4-5; Matthew 22:37-40; Revelation 2:2-5; Exodus 33:1-6, 12-17