They wrote in a manner to describe the future things in terms that they were familiar with at that time,for they did not know the actual names of the things in the future.
Nah 2:3 The shield of his mighty men is made red, the valiant men are in scarlet: the chariots shall be with flaming torches in the day of his preparation, and the fir trees shall be terribly shaken.
Nah 2:4 The chariots shall rage in the streets, they shall justle one against another in the broad ways: they shall seem like torches, they shall run like the lightnings.
This is obviously talking of automobiles in the future,with their headlights,and heavy traffic where they are close to each other,as we see today.Chariot is a form of transportation.The writer did not know the name of the form of transportation automobiles in the future,so the writer said chariots,but he is describing how the form of transportation would be like at the end time.
Isa 31:4 For thus hath the LORD spoken unto me, Like as the lion and the young lion roaring on his prey, when a multitude of shepherds is called forth against him, he will not be afraid of their voice, nor abase himself for the noise of them: so shall the LORD of hosts come down to fight for mount Zion, and for the hill thereof.
Isa 31:5 As birds flying, so will the LORD of hosts defend Jerusalem; defending also he will deliver it; and passing over he will preserve it.
The 6 day war when Israel fighter jets paved the way to win that war,and take back control of Jerusalem,did not know what to call them for they did not know they would be called jets in the future,and did not know much about them as we would today,but had a vision of the jets and said as birds flying God will defend Jerusalem,deliver it,and preserve it.
Rev 9:18 By these three was the third part of men killed, by the fire, and by the smoke, and by the brimstone, which issued out of their mouths.
Rev 9:19 For their power is in their mouth, and in their tails: for their tails were like unto serpents, and had heads, and with them they do hurt.
Did not know to call them nuclear weapons,or know about them in detail as today,but this is how John described it.
When the writers were shown a vision of the future to write down,they described in the terms they knew for that time period,which they would describe things like animals,or like a woman's hair,which means it had power and glory,or something they were familiar with to describe a vision they were not familiar with except that vision.
We in the future would have more knowledge,and detail,of the things today,and we know the name of them,but they did not back then,but described the vision the best they could with what they knew back then.
It would be like some people of an isolated tribe coming in contact with civilization and technology,they would describe the things the same way to the people of their tribe using terms they were familiar with,or were the closest related.