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.
Numbers 2:10-16
10
"On the south side shall be the standard of the camp of Reuben according to their divisions. The prince of the children of Reuben shall be Elizur the son of Shedeur.
11
His division, and those who were numbered of it, were forty-six thousand five hundred.
12
"Those who encamp next to him shall be the tribe of Simeon. The prince of the children of Simeon shall be Shelumiel the son of Zurishaddai.
13
His division, and those who were numbered of them, were fifty-nine thousand three hundred.
14
"The tribe of Gad: and the prince of the children of Gad shall be Eliasaph the son of Reuel.
15
His division, and those who were numbered of them, were forty-five thousand six hundred fifty.
16
"All who were numbered of the camp of Reuben were one hundred fifty-one thousand four hundred fifty, according to their armies. They shall set out second.