Read Numbers 6:22-27 on Sefaria for the surrounding biblical/liturgical context.
Numbers 6:24-26 is structurally elegant. Each line has more words than the last (3, 5, 7 words in Hebrew), and each names a different mode of divine attention:
Line 1, protection: "May the LORD bless you and keep you." Bracha (blessing) and shmirah (guarding), outer-circle care.
Line 2, favor: "May the LORD shine His face on you and be gracious to you." Or panim (light of the face, engagement, attention) and chen (grace), middle-circle care.
Line 3, peace: "May the LORD lift His face to you and grant you peace." Nesi'at panim (lifting the face, full presence) and shalom (peace, integration), inner-circle care.
The blessing moves from outer protection → middle favor → inner peace. The Hebrew structure is a deliberate crescendo.
The Genesis 48 scene: Jacob is dying in Egypt. Joseph brings his two sons, Manasseh (the elder) and Ephraim (the younger). Jacob crosses his hands (deliberately, despite Joseph's protest) and gives the younger Ephraim the right-hand blessing. He says: "By you Israel will bless, saying, May God make you like Ephraim and Manasseh."
The rabbis read this as a model for diaspora Jewish identity: Ephraim and Manasseh grew up in Egypt's most assimilated environment (Joseph was second-in-command to Pharaoh), they spoke Egyptian, they had Egyptian names, and yet Jacob saw enough Jewish identity in them to bless them as full inheritors. They are the proof that you can live in another culture and still raise Jewish children.
After the formal text, many parents whisper a private blessing, for the child's health, character, future. There is no fixed text for this; it is the moment when the parent says what's actually on their heart, eye-to-eye with the child, hands still resting on their head. Some children remember these private words for decades.
For very young children, the parent's voice is part of the early childhood soundscape of Jewish life. For teenagers, the blessing often becomes brief and slightly awkward, but they still come for it. For adult children who visit, the blessing returns, sometimes more emotional than ever.