sprinkling

What is "a sprinkling of blood" in 1 Peter 1:2

What is "a sprinkling of blood" in 1 Peter 1:2

κατὰ (according to) πρόγνωσιν (foreknowledge) Θεοῦ (of God) Πατρός (Father) ἐν (by) ἁγιασμῷ (a sanctification) Πνεύματος (of spirit) εἰς (into) ὑπακοὴν (obedience) καὶ (and) ῥαντισμὸν (a sprinkling) αἵματος (of blood) Ἰησοῦ (of Yeshua) …