Seas
The word seas, in the plural, appears on the first page of the Bible: “God called the dry land Earth, and the waters that were gathered together he called Seas” (Genesis 1:10). From there the plural runs through the Law, the Psalms and the Prophets to describe the great mass of waters that surrounds the land, full of life and danger, which the ancient world often feared as a power of chaos.
The Bible uses both the singular “sea” and the plural “seas”. The plural is especially frequent in poetry and in texts about creation and God's sovereignty: the Lord founded the earth “upon the seas” (Psalm 24:2), he does whatever he pleases “in the seas and all deeps” (Psalm 135:6), and Jonah was cast “into the heart of the seas” (Jonah 2:3). This entry looks at that plural usage and at what it teaches about God as Creator and Lord of the waters.
1. Etymology and meaning
The Hebrew word is yam (יָם), “sea”, plural yammim (יַמִּים). It can designate a particular body of water, such as the Mediterranean, called “the Great Sea” (Numbers 34:6), the Salt Sea (Genesis 14:3), the Sea of Chinnereth (Numbers 34:11) or the Red Sea (Exodus 15:4). Because the Mediterranean lay to the west of Israel, yam also came to mean “west” (Genesis 28:14).
The plural yammim is used in two main ways. It can refer to many seas or to the sea in all its parts, and in poetry it often expresses vastness, what grammarians call a plural of extension: not a count of separate seas, but the immensity of the waters. Which nuance is meant must be decided by context, and in several passages both are possible.
In Greek the word is thalassa (θάλασσα), plural thalassai. The Septuagint renders Genesis 1:10 with the plural: God called the gatherings of the waters thalassas. Outside the Bible, in the Ugaritic texts of Canaan, Yamm (“Sea”) was a god who fought against Baal. In Scripture the sea is never a god; it is a creature, named and bounded by the one God.
2. Historical context and biblical use
Israel and the sea
Israel was not a seafaring nation. Its coast had few natural harbors, and for most of its history maritime trade was in the hands of the Phoenicians of Tyre and Sidon; Solomon's fleet depended on Hiram's sailors (1 Kings 9:26-27). For the Israelites the sea was a western frontier, a source of fish and trade for some tribes (Deuteronomy 33:19, “they draw from the abundance of the seas”), but also a place of storms, shipwreck and mystery.
The plural in creation
On the third day God gathered the waters into one place and let the dry land appear; the land he called Earth and the gathered waters Seas (Genesis 1:9-10). On the fifth day he filled the waters with living creatures and blessed them: “fill the waters in the seas” (Genesis 1:22). The seas are therefore part of the good creation, named by God and filled with his blessing. When the Levites prayed in Nehemiah's day, they confessed: “You have made heaven, the heaven of heavens, with all their host, the earth and all that is on it, the seas and all that is in them” (Nehemiah 9:6).
The seas and the nations
The prophets use the phrase “the heart of the seas” for the maritime power of Tyre: “Your borders are in the heart of the seas” (Ezekiel 27:4). The king of Tyre boasted, “I sit in the seat of the gods, in the heart of the seas”, but God announced that he would die “in the heart of the seas” (Ezekiel 28:2, 8). The same place that symbolized pride and security became the place of judgment.
Not to be confused
“The Sea” in the singular also names the great bronze basin of Solomon's temple (1 Kings 7:23-26), an object distinct from the seas discussed here.
3. Main passages
Genesis 1:10 is the foundation. The act of naming shows authority: God does not fight the waters, he assigns them a place and a name. What surrounding cultures imagined as a hostile power is, in Genesis, simply one more work of the Creator, which he declared good.
Psalm 8:8 places the seas within humanity's God-given dominion: “the birds of the heavens, and the fish of the sea, whatever passes along the paths of the seas.” The psalmist marvels that the God whose name is majestic in all the earth has crowned human beings with glory and put these creatures under their feet (Psalm 8:5-6). Hebrews applies the psalm ultimately to Jesus, the true man through whom this dominion is restored (Hebrews 2:6-9).
Psalm 24:1-2 grounds God's ownership of the world in creation: “The earth is the LORD's and the fullness thereof, the world and those who dwell therein, for he has founded it upon the seas and established it upon the rivers.” The image is poetic and reflects the way ancient people described the world, with the land rising out of the waters (compare Psalm 136:6); the theological point is that the earth is stable because God founded it.
Psalm 135:6 proclaims God's freedom and power: “Whatever the LORD pleases, he does, in heaven and on earth, in the seas and all deeps.” No region is beyond his rule, not even the depths that no human eye had seen.
Jonah 2:3 shows the seas as the place of judgment and of rescue. From inside the fish Jonah prays: “you cast me into the deep, into the heart of the seas, and the flood surrounded me.” He recognizes that it was the Lord who threw him there, and the same Lord brought his life up from the pit (Jonah 2:6). Jesus later presented the sign of Jonah as a sign of his own death and resurrection (Matthew 12:40).
Other texts complete the picture. The seas praise God: “Let heaven and earth praise him, the seas and everything that moves in them” (Psalm 69:34). God stills “the roaring of the seas, the roaring of their waves” (Psalm 65:7), and even if the mountains are moved “into the heart of the sea” (Hebrew plural), his people will not fear (Psalm 46:2).
4. Theological significance
The first lesson of the seas is that God is Creator and sovereign. He sets their limits: he shut in the sea with doors and said, “Thus far shall you come, and no farther” (Job 38:8-11); he placed the sand as a boundary that the waves cannot pass (Jeremiah 5:22). “The sea is his, for he made it” (Psalm 95:5). What seems uncontrollable to us is fully under his command.
The second lesson is that the seas also serve as images of chaos, hostile nations and evil. The raging waters picture the nations in uproar (Psalm 65:7), and in Daniel's vision the beasts rise from the sea stirred by the winds (Daniel 7:2-3; compare Revelation 13:1). Yet even there God reigns: “Mightier than the thunders of many waters, mightier than the waves of the sea, the LORD on high is mighty!” (Psalm 93:4).
The third lesson is redemptive. God opened a path through the sea for his people at the exodus (Exodus 14:21-22; Isaiah 51:10). In the Gospels Jesus rebukes the wind and the sea, and the disciples ask, “Who then is this, that even the wind and the sea obey him?” (Mark 4:39-41); he walks on the waters (Matthew 14:25). What the Old Testament says of the LORD, the Gospels show in Christ. And the prophet promises that God will cast all our sins “into the depths of the sea” (Micah 7:19).
Finally, the Bible's story ends with a new creation in which “the sea was no more” (Revelation 21:1). This does not despise the good creation of Genesis 1; within the imagery of Revelation, the sea represents what is restless, threatening and separating, and its absence announces a world without chaos, death or tears (Revelation 21:4).
5. Legacy and canonical references
The plural “seas” appears from the Law to the Prophets. Key references include Genesis 1:10, 22; Leviticus 11:9-10 (creatures “in the seas”); Deuteronomy 33:19; Nehemiah 9:6; Psalms 8:8; 24:2; 46:2; 65:7; 69:34; 135:6; Ezekiel 27:4, 25-27; 28:2, 8; and Jonah 2:3. In the New Testament, the ship carrying Paul ran aground at a place Luke describes as topos dithalassos, literally “a place of two seas” (Acts 27:41), which the ESV renders “a reef”.
Translations handle the Hebrew plural differently. Some keep “Seas” in Genesis 1:10; others use the singular “sea” there and in several psalms. The difference is one of style, not of doctrine: in every case the text affirms that all the waters belong to God.
6. Application for today
The seas remind us of our smallness and of God's greatness. Anyone who has stood before the ocean feels its power; the Bible invites us to turn that awe into worship of the One who made it and holds it in check. The same God who says to the waves “thus far” also sets limits to the forces that threaten our lives.
Jonah's prayer teaches that even when we are in “the heart of the seas”, overwhelmed by consequences of our own disobedience, God can hear and save. “Salvation belongs to the LORD!” (Jonah 2:9). And the Christ who calmed the storm is with his disciples in every boat that seems to be sinking.
Finally, the promise that “the sea was no more” gives hope to the tired and the grieving. The restlessness of this world is not the last word. The Lord of the seas is preparing a new creation where his people will live in peace, and until then we can say with the psalmist: “Therefore we will not fear” (Psalm 46:2).