Let us draw near with a true heart in full assurance of faith, having our hearts sprinkled from an evil conscience, and our bodies washed with pure water. Let us draw near - Let us come with the blood of our sacrifice to the throne of God: the expression is sacrificial.
With a true heart - Deeply convinced of our need of help, and truly in earnest to obtain it.
In full assurance of faith - Being fully persuaded that God will accept us for the sake of his Son, and that the sacrificial death of Christ gives us full authority to expect every blessing we need.
Having our hearts sprinkled - Not our bodies, as was the case among the Hebrews, when they had contracted any pollution, for they were to be sprinkled with the water of separation, see Numbers 19:2-10; but our hearts, sprinkled by the cleansing efficacy of the blood of Christ, without which we cannot draw nigh to God.
From an evil conscience - Having that deep sense of guilt which our conscience felt taken all away, and the peace and love of God shed abroad ill our hearts by the Holy Ghost given unto us.
Our bodies washed with pure water - The high priest, before he entered into the inner tabernacle, or put on his holy garments, was to wash his flesh in water, Leviticus 16:4, and the Levites were to be cleansed the same way, Numbers 8:7. The apostle probably alludes to this in what he says here, though it appears that he refers principally to baptisms, the washing by which was an emblem of the purification of the soul by the grace and Spirit of Christ; but it is most likely that it is to the Jewish baptisms, and not the Christian, that the apostle alludes.