Matthew Poole and continuators on Exodus 24:6

6 And Moses took half of the bloud , and put it in basons; and half of the bloud he sprinkled on the altar .

Of the beasts killed, which for conveniency of sprinkling was mixed with a little water, Heb. 9. 19. whereby also Christ was most fitly represented, who came by water and blood, 1 Ioh. 5. 6.

To signify, as well that God was appeased and atoned by this blood as it represented the blood of Christ, as also that Christ was sanctified with his own blood, Heb. 9. 12.