Shared ground
These verses are a deliberate shift from describing devastation (earlier in the psalm) to recalling what the poem says God is like and what God has done. The speaker calls God “my King of old,” grounding the prayer in God’s long-standing rule rather than the community’s current weakness. The text explicitly credits God with “working salvation in the midst of the earth” (public, concrete rescue), defeating threatening sea powers, controlling waters both at sea and on land, and establishing the ordered world of time and seasons.
The sea imagery (“sea monsters,” “Leviathan,” many “heads”) portrays God’s dominance over forces that overwhelm human beings. Whether pictured as creatures or as symbols, the point in the poem is total defeat and reversal: the threat is smashed and turned into “food.” The closing lines widen the focus: day and night, light and sun, earth’s boundaries, and the cycle of summer and winter are all presented as realities God set in place and owns.
Where interpretation differs
Are Leviathan and the sea monsters literal or symbolic? Some read them as actual creatures within creation that God controls, with poetic exaggeration. Others read them mainly as symbols for chaos and hostile power (whether natural or political), using common ancient imagery to say that God subdues what threatens the world.
What event is “You divided the sea” referring to? Many readers hear an echo of the Red Sea deliverance (God making a way through the waters). Others take it more generally as a creation-style claim: God “split” or mastered the sea as part of establishing order, without pointing to one historical moment.
Who receives Leviathan as food? The line can be heard as food for humans, or as food for wilderness/desert animals (or both). The shared meaning is that the defeated threat becomes provision for others, highlighting the completeness of God’s victory.
Why the disagreement exists
The passage uses highly poetic, image-rich language that overlaps with both creation themes (ordering sea, setting boundaries, appointing seasons) and rescue-from-oppression themes (salvation, crushing enemies). Because the poem does not name a specific historical event and uses well-known ancient sea-monster imagery, readers differ on how literally to take the monsters and how narrowly to identify the “divided the sea” memory.
What this passage clearly contributes
It anchors the lament in a theology of God’s established kingship and world-governing power: God’s rule is “of old,” God acts within the world (“in the midst of the earth”), and God’s power extends from defeating threatening forces to sustaining and ordering everyday reality (water sources, time, seasons, and the earth’s limits). Even without settling the imagery questions, the text’s main claim is that God’s authority is comprehensive—over chaos, over history, and over creation’s regular rhythms.