To the conductor, upon shoshanim. Save me, God, for the waters have come up to my neck. Solomon says in the Song of Songs, "How beautiful and pleasant you are, love." Israel, fair and comely, stood by the sea and saw the glory of the Lord. They became upright when He gave them the Torah, as it is written, "He stores up sound wisdom for the upright" (Proverbs 2:7). And it says, "Do good, O Lord, to those who are good, and to those who are upright in their hearts" (Psalm 125:4). When they saw Him enter the Tent of Meeting, they became righteous, as it says, "Shout with joy, you righteous ones, before the Lord" (Psalm 33:1). And when they saw Him on the sea, they became roses, as it says, "To the conductor, upon shoshanim." When is this? When the waters have come up to the neck.
Solomon's Deep Dive into the Waters of Torah
Midrash Tehillim 69:1