Psalms 104:6

⁴ He makes the winds His messengers, flames of fire His servants.

⁵ He set the earth on its foundations, never to be moved.

You covered it with the deep like a garment; the waters stood above the mountains.

⁷ At Your rebuke the waters fled; at the sound of Your thunder they hurried away—

⁸ the mountains rose and the valleys sank to the place You assigned for them—

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB: You covered it with the deep like a garment; the waters stood above the mountains.
KJV: Thou coveredst it with the deep as with a garment: the waters stood above the mountains.
WEB: You covered it with the deep as with a cloak. The waters stood above the mountains.
ASV: Thou coveredst it with the deep as with a vesture; The waters stood above the mountains.
DARBY: Thou hadst covered it with the deep, as with a vesture; the waters stood above the mountains:
BLB: The deep, as [with] a garment You covered it; upon the mountains the waters were standing.

ÅB: Du hadde dekket den med dype vann som med en kappe; vannene sto over fjellene.
OTB: Du dekket den med dypet som med et klede;
Vannene sto over fjellene.
B1930: Du hadde dekket den med dype vann som med et klædebon; vannene stod over fjellene.

Genesis 7:19
Finally, the waters completely inundated the earth, so that all the high mountains under all the heavens were covered.
Read in context
2 Peter 3:5
But they deliberately overlook the fact that long ago by God’s word the heavens existed and the earth was formed out of water and by water,
Read in context
Genesis 1:2–10
Now the earth was formless and void, and darkness was over the surface of the deep. And the Spirit of God was hovering over the surface of the waters.
Read in context