וַאֲבָֽרֲכָה֙ מְבָ֣רְכֶ֔יךָ וּמְקַלֶּלְךָ֖ אָאֹ֑ר וְנִבְרְכ֣וּ בְךָ֔ כֹּ֖ל מִשְׁפְּחֹ֥ת הָאֲדָמָֽה׃
And I will bless them that bless thee, and him that curseth thee will I curse; and in thee shall all the families of the earth be blessed.’
Read halakhic rulings (Jewish law) on Genesis 12:3: and classical halakhic sources.