Look at the language of Psalm 18 and ask yourself 1) Has this prophecy happened already, and 2) If yes, did every bit of occur LITERALLY?
To the choirmaster. A Psalm of David, the servant of the Lord, who addressed the words of this song to the Lord on the day when the Lord delivered him from the hand of all his enemies, and from the hand of Saul. He said:
18 I love you, O Lord, my strength.
2 The Lord is my rock and my fortress and my deliverer,
my God, my rock, in whom I take refuge,
my shield, and the horn of my salvation, my stronghold.
3 I call upon the Lord, who is worthy to be praised,
and I am saved from my enemies.
4 The cords of death encompassed me;
the torrents of destruction assailed me;[a]
5 the cords of Sheol entangled me;
the snares of death confronted me.
6 In my distress I called upon the Lord;
to my God I cried for help.
From his temple he heard my voice,
and my cry to him reached his ears.
7 Then the earth reeled and rocked;
the foundations also of the mountains trembled
and quaked, because he was angry.
8 Smoke went up from his nostrils,[b]
and devouring fire from his mouth;
glowing coals flamed forth from him.
9 He bowed the heavens and came down;
thick darkness was under his feet.
10 He rode on a cherub and flew;
he came swiftly on the wings of the wind.
11 He made darkness his covering, his canopy around him,
thick clouds dark with water.
12 Out of the brightness before him
hailstones and coals of fire broke through his clouds.
13 The Lord also thundered in the heavens,
and the Most High uttered his voice,
hailstones and coals of fire.
14 And he sent out his arrows and scattered them;
he flashed forth lightnings and routed them.
15 Then the channels of the sea were seen,
and the foundations of the world were laid bare
at your rebuke, O Lord,
at the blast of the breath of your nostrils.
—–
Now look at Isaiah 19, which is a “time of the end” prophecy (end of Old Covenant, AD 70), and notice the language of God’s sovereign judgment on a land. Sounds kind of like Revelation too, doesn’t it? … look specifically at the verse 1 promise and then look at verse 4 regarding how God accomplishes it…
1 An oracle concerning Egypt.
Behold, the Lord is riding on a swift cloud
and comes to Egypt;
and the idols of Egypt will tremble at his presence,
and the heart of the Egyptians will melt within them.
2 And I will stir up Egyptians against Egyptians,
and they will fight, each against another
and each against his neighbor,
city against city, kingdom against kingdom;
3 and the spirit of the Egyptians within them will be emptied out,
and I will confound[a] their counsel;
and they will inquire of the idols and the sorcerers,
and the mediums and the necromancers;
4 and I will give over the Egyptians
into the hand of a hard master,
and a fierce king will rule over them,
declares the Lord God of hosts.