Exodus 15:14-18

14 The nations will hear
This verb is a prophetic perfect, assuming that the text means what it said and this song was sung at the Sea. So all these countries were yet to hear of the victory.
and tremble;
anguish
The word properly refers to “pangs” of childbirth. When the nations hear, they will be terrified.
will seize
The verb is again a prophetic perfect.
the inhabitants of Philistia.
15 Then the chiefs of Edom will be terrified,
This is a prophetic perfect.

trembling will seize
This verb is imperfect tense.
the leaders of Moab,
and the inhabitants of Canaan will shake.
16 Fear and dread
The two words can form a nominal hendiadys, “a dreadful fear,” though most English versions retain the two separate terms.
will fall
The form is an imperfect.
on them;
by the greatness
The adjective is in construct form and governs the noun “arm” (“arm” being the anthropomorphic expression for what God did). See GKC 428 #132.c.
of your arm they will be as still as stone
For a study of the words for fear, see N. Waldman, “A Comparative Note on Exodus 15:14–16, ” JQR 66 (1976): 189-92.

until
Clauses beginning with עַד (’ad) express a limit that is not absolute, but only relative, beyond which the action continues (GKC 446-47 #138.g).
your people pass by, O Lord,
until the people whom you have bought
The verb קָנָה (qanah) here is the verb “acquire, purchase,” and probably not the homonym “to create, make” (see Gen 4:1; Deut 32:6; and Prov 8:22).
pass by.
17 You will bring them in
The verb is imperfect.
and plant them in the mountain
The “mountain” and the “place” would be wherever Yahweh met with his people. It here refers to Canaan, the land promised to the patriarchs.
of your inheritance,
in the place you made
The verb is perfect tense, referring to Yahweh’s previous choice of the holy place.
for your residence, O Lord,
the sanctuary, O Lord, that your hands have established.
18 The Lord will reign forever and ever!
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