The Blood of Christ: Free and Costly

Consider these verses:

"But when Christ appeared as a high priest of the good things that have come, then through the greater and more perfect tent (not made with hands, that is, not of this creation) he entered once for all into the holy places, not by means of the blood of goats and calves but by means of his own blood, thus securing an eternal redemption. For if the sprinkling of defiled persons with the blood of goats and bulls and with the ashes of a heifer sanctifies for the purification of the flesh, how much more will the blood of Christ, who through the eternal Spirit offered himself without blemish to God, purify our conscience from dead works to serve the living God."
-Hebrews 9:11-14

"And every priest stands daily at his service, offering repeatedly the same sacrifices, which can never take away sins. But when Christ had offered for all time a single sacrifice for sins, he sat down at the right hand of God, waiting from that time until his enemies should be made a footstool for his feet. For by a single offering he has perfected for all time those who are being sanctified."
-Hebrews 10:11-14

I just love the language of Hebrews 9 & 10 because it seems so clear: If we could have cleansed ourselves by our own sacrifices, we wouldn't have kept offering them! But Jesus offered a sacrifice once. Done. Clean. Chapter 10 continues with instructions in light of Christ's sacrifice. We are to draw near, with assurance and spur one another on to love and good deeds.

My heart is compelled to worship because of what Christ has done. I'm working on planning another worship set for April, and I keep coming back to the blood of Christ and these verses that I read in a quiet time recently. I'm already planning on singing these Hymns:

On Christ the Solid Rock
Nothing But the Blood

Feel free to comment in and add a song that focuses on the cleansing power of the blood of Christ.