The blessing in vv. 23-27 comes after the dealing with defilement (Num. 5:1-10), the test for chastity (Num. 5:11-31), and the Nazarite vow (vv. 1-21). This blessing, like that in 2 Cor. 13:14, is not outward and material. Rather, it is the eternal blessing of the Triune God, which is the Triune God dispensing Himself in His Divine Trinity into us for our enjoyment. In the entire universe the unique blessing is the Triune God, and this blessing comes to us through the dispensing of the divine Being into us in His Divine Trinity — in the Father, the Son, and the Holy Spirit. Ephesians 1 gives us a record of how the Triune God blesses His chosen, redeemed, and transformed people in His Divine Trinity, issuing in the church as the Body of Christ, the fullness of the One who fills all in all (see notes in Eph. 1). As the consummation of the entire record of the Bible, the New Jerusalem is the very God in His Divine Trinity — the Father, the Son, and the Spirit — mingled with His chosen, redeemed, transformed, and glorified people as their eternal blessing. Such a blessing is the ultimate fulfillment of God’s blessing to Israel in Num. 6.
“Jehovah bless you and keep you” (v. 24) can be ascribed to the Father; “Jehovah make His face shine upon you and be gracious to you” (v. 25) can be ascribed to the Son; and “Jehovah lift up His countenance upon you and give you peace” (v. 26) can be ascribed to the Holy Spirit. The Father blesses us, the Son shines upon us, and the Holy Spirit lifts up His countenance upon us. As a result, we are kept, we receive grace, and we have peace.