583. 'The Nephilim' were called 'mighty' on account of their self-love. This too is clear from many passages in the Word where such people are called 'mighty', as in Jeremiah,

The mighty ones of Babel have ceased fighting; they are seated in their strongholds; their might is deserting them, they have become like women. Jeremiah 51:30.

Here also 'the mighty ones of Babel' stands for those who are eaten up with self-love. In the same prophet,

A sword against the liars, and they will go mad. A sword against her mighty ones, and they will be thrown into confusion. Jeremiah 50:36.

In the same prophet,

I have seen it. They have been thrown into confusion and are turning backward. Their mighty ones have been crushed and have surely fled, and they have not looked back - terror all around! The swift will not flee away, nor the mighty one escape. Mount your horses, and drive your chariots madly on; let the mighty ones go forth - Cush, Put, the Ludim. Jeremiah 46:5-6, 9.

This refers to persuasion resulting from reasonings. In the same prophet,

How do you say, We are mighty, and men of strength for war? Moab has been laid waste. Jeremiah 48:14-15.

In the same prophet,

The city has been taken and its strongholds, possession has been taken of it. The heart of the mighty ones of Moab on that day will be like the heart of a woman in labour. Jeremiah 48:41.

Chapter 49:22 similarly speaks of 'the heart of the mighty ones of Edom'. In the same prophet,

Jehovah has redeemed Jacob, and has reclaimed him from the hand of one mightier than himself. Jeremiah 31:11.

Here a different [Hebrew] expression is used for 'mighty'. The fact that the Anakim, who descended from the Nephilim, were spoken of as 'mighty ones' is clear in Moses,

You are crossing the Jordan today, going to dispossess nations greater and more numerous than yourself, cities great and fortified up to heaven, a people great and tall, the sons of the Anakim whom you know, and of whom you have heard it said, Who will stand before the sons of Anak? Deuteronomy 9:1-2.

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)