In Numbers 6:19, this signifies that power and strength are in all parts. It also signifies the holiness of the literal sense of the Word as well as the power of the Lord through truth. (Arcana Coelestia 9836[2]; Doctrine Regarding Sacred Scripture 35[3], 49[2])

7269. Also Aaron thy brother shall be thy prophet. That this signifies the doctrine thence derived, is evident from the signification of a “prophet,” as being the truth of doctrine, thus doctrine from the Word (see n. 2534). (That Aaron represents the doctrine of the church, or the doctrine of good and truth which is from the Word, see n. 6998, 7009, 7089.) As a “prophet” signifies doctrine, in a determinate sense it signifies one who teaches, according to what was said just above (see n. 7268 at the end).