4117. 'And he set his face towards mount Gilead' means good within it. This is clear from the meaning of 'mount' as the celestial element of love, which is good, dealt with in 795, 1430, to which the good meant by 'Jacob' was joined - 'Gilead' meaning the essential nature of it. Since the river was the boundary and, as has been stated, meant the first phase of the joining together, 'mount Gilead', which lay in this part away from the Jordan, means the good involved in that first stage of the joining together.

[2] The land of Gilead where the mountain was situated lay within the confines of the land of Canaan understood in a wide sense. It was situated on this side of the Jordan, and was granted as an inheritance to the Reubenites and the Gadites, and in particular to the half-tribe of Manasseh. And since the inheritances stretched out that far, it is said that it was situated within the confines of the land of Canaan understood in a wide sense. The fact that this territory was granted as an inheritance to those tribes is clear in Moses, Numbers 32:1, 26-41; Deuteronomy 3:8, 10-16; Joshua 13:24-31. For this reason when the land of Canaan was envisaged in its entirety it was said to stretch from Gilead even to Dan, and in another sense from Beersheba even to Dan, for Dan also was a boundary, 1710, 3923. Regarding its stretching from Beersheba even to Dan, see 2858, 2859; and reference to its doing so from Gilead to Dan occurs in Moses,

Moses went up from the plains of Moab onto mount Nebo, the top of Pisgah, which is in the direction of Jericho. There Jehovah showed him the whole land, Gilead even to Dan. Deuteronomy 34:1.

And in the Book of Judges,

Gilead dwelling at the crossing of the Jordan; and Dan, why will he fear ships? Judges 5:17.

[3] Because it was a boundary, 'Gilead' in the spiritual sense means the good that comes first, which is that of the bodily senses, for it is the good or delight of the senses that a person who is being regenerated is introduced into first of all. This is the sense in which 'Gilead' is taken in the Prophets, as in Jeremiah 8:22; 22:6; 46:11; 50:19; Ezekiel 47:18; Obad. verse 19; Micah 7:14; Zechariah 10:10; Psalms 60:7; and in the contrary sense, in Hosea 6:8; 12:11.

In the Word, arrows stand for truths which defend person from falsity.

In Arcana Coelestia 2709, it says this when discussing Genesis 21:20:

"And he became a shooter of the bow." That this signifies the man of the spiritual church, is evident from the signification of a “shaft,” “dart,” or “arrow,” as being truth; and from the signification of a “bow,” as being doctrine (see above, n. Arcana Coelestia 2686). The man of the spiritual church was formerly called a “shooter of the bow,” because he defended himself by truths, and disputed about truths; differently from the man of the celestial church, who is secure by means of good, and does not dispute about truths (see above, n. Arcana Coelestia 2708). The truths by which the man of the spiritual church defends himself, and respecting which he disputes, are from the doctrine which he acknowledges.

[2] That the spiritual man was in old time called a “shooter” and an “archer,” and that doctrine was called a “bow” and a “quiver,” and that the truths of doctrine, or rather doctrinal matters, were called “darts,” “shafts,” and “arrows,” is further evident in David:

The sons of Ephraim, being armed, shooters of the bow, turned back in the day of battle (Psalms 78:9).

In some places in the Word, an arrow can also have a negative meaning -- where it is falsity destroying truth, and a bow is the doctrine from falsity. A really good source to check here is Apocalypse Explained 357, stating in subsection 12 (in some translations).

(Odkazy: Isaiah 7:24)