Arcana Coelestia #2378
2378. That 'the men reached out their hand' means the Lord's powerful aid is clear from the meaning of 'the men' as the Lord, dealt with above, and from the meaning of 'hand' as power, dealt with in 878.
Joshua 8:18-19
18
Yahweh said to Joshua, "Stretch out the javelin that is in your hand toward Ai, for I will give it into your hand." Joshua stretched out the javelin that was in his hand toward the city.
19
The ambush arose quickly out of their place, and they ran as soon as he had stretched out his hand, and entered into the city, and took it. They hurried and set the city on fire.