Rabbi Ruditsky compares ya’shir — they will sing — to ya’shar — they will go straight. From this, he derives the concept that the Israelites will look forward to tomorrow, seeing their freedom directly in front of them. The Song of the Sea is about tomorrow. The parashah doesn’t promise that there will never be another Pharaoh, nor that the world will be free from hatred, but it teaches that we should look forward, not backward.
Rabbi Cantor Robbins describes the spiritual depth of Tu B’Shevat, from the linguistic perspective of “15”, the Name of God, and the concept of the Tree of Life.
Refael Kramer references Likutei Halachot, Tolaiim 4, in comparing Beshelach to Rabbi Nachman’s story of The Queen’s Daughter, who escaped the unwelcome attentions of an evil suitor by entering a castle of water.
Rabbi Simmons references the Stockholm Syndrome, as it applies to the Israelites under Pharaoh.