Verse 26 has a larger punch when you understand what "countenance" meant to the Jewish people back then.
The Priestly Benediction
22 The LORD spoke to Moses, saying, 23 “Speak to Aaron and his sons, saying: Thus you shall bless the Israelites: You shall say to them:
24 The LORD bless you and keep you;
25 the LORD make his face to shine upon you and be gracious to you;
26 the LORD lift up his countenance upon you and give you peace.
27 “So they shall put my name on the Israelites, and I will bless them.”
Numbers 6:21-27 (NRSVue Strong's Bible)
OR
26 May the LORD show you his favor and give you his peace.’
Numbers 6:26 (NLT)
OR
26 the LORD turn his face toward you and give you peace.”’
Numbers 6:26 (NIV)
Noun: countenance
1. The appearance conveyed by a person's face
2. Formal and explicit approval
[WordWeb.info]
63tn v. 26 The last line of the blessing also has first the image and then the parallel interpretation—for God to lift up his face is for God to give peace. The idea of the fallen face is one of anger (see Gen 4:6, 7); and the idea of the hidden face is that of withholding support, favor, or peace (see Deut 31:18; Pss 30:8; 44:25). If God lifts his face toward his people, it means he has given them peace—peace, prosperity, completeness, health, safety, general well-being, and the like.
