Variantly: "And He shall let fly His shafts and scatter them": His shafts scattered them and His lightnings "huddled" them. "and they were confounded (vayehumam)": He took their greaves and they did not know what they were doing.
He Shall Let Fly His Shafts and Scatter
Mekhilta Tractate Vayehi Beshalach 3:23