And the priest shall dip his finger in the blood, and sprinkle of the blood seven times before the LORD, before the vail of the sanctuary. Seven times - See Clarke's note on Exodus 29:30. The blood of this sacrifice was applied in three different ways:
1. The priest put his finger in it, and sprinkled it seven times before the veil, Leviticus 4:6.
2. He put some of it on the horns of the altar of incense.
3. He poured the remaining part at the bottom of the altar of burnt-offerings, Leviticus 4:7.