Jubilees 48:14

And all the peoples whom he brought to pursue after Israel, the Lord our God cast them into the midst of the sea, into the depths of the abyss beneath the children of Israel, even as the people of Egypt had cast their children into the river He took vengeance on 1,000,000 of them, and one thousand strong and energetic men were destroyed on account of one suckling of the children of thy people which they had thrown into the river.