Arcana Coelestia # 6282
6282. 'May he bless the boys' means, May he make it possible for them to have truth and goodness. This is clear from the meaning of 'blessing' as endowing with truth and goodness, for in the spiritual sense 'a blessing' does not imply anything else, 1420, 1422, 4981; and from the representation of Ephraim and Manasseh, to whom 'the boys' refers here, as the Church's understanding and the Church's will, to which truth and good were to be imparted, truth to its understanding and good to its will.
Gad
Gad, in a supreme sense, signifies omnipotence; in a spiritual sense, the good of life, or use; and in a natural sense, works. Gad, in an opposite sense, signifies the quality of people who are not in the good of faith, and thus not in good works.
(Odkazy: Apocalypse Revealed 352)