The specific thought denoted by these words is the application to believers of all the saving virtues and benefits of the blood of Jesus Christ. This expression is borrowed from the Levitical economy, in relation to which the sprinkling of blood was a common feature. There were three outstanding occasions when the blood was applied in various ways.
In Egypt it was sprinkled on the doorposts and lintels of the houses of the Israelites (Exod. 12). That was the blood of redemption. Gods people went out of Egypt because of that blood, leaving behind their bondage, their taskmasters, their labours, and their groaning. Through the redeeming blood sinners are set free from the power and thraldom of sin. They have redemption through his blood (Eph. 1:7).
The next outstanding reference to the sprinkling of the blood is in Exodus 24. Moses took a basin of blood, half of which he sprinkled on the altar and the rest upon the people. Here we see the Godward and manward aspects of the atonement. It was sprinkled on the altar first, for the atonement is objective in its primary effect. It satisfies the justice of God and appeases His wrath before it meets the need of the sinner. Thus it is the blood of justification. Sinners are declared righteous when they are covered with the satisfying merits of the blood of Gods dear Son.
The final prominent reference to the sprinkling of blood is in Leviticus 16. On the great day of atonement Aaron sprinkled the mercy seat with the blood seven times. Thereby he was reconciling the holy place (Lev. 16:20). His action demonstrated that there is peace through the blood of his cross (Col. 1:20). Christ has made reconciliation for the sins of His people.
Truly the blood of sprinkling speaketh. Hear its blessed tones today and rejoice in its power.