"and he cast it into the waters": Others say: Israel were (hereby) imploring (mercy) and praying before their Father in heaven. As a son implores and guards himself before his father, so were Israel imploring and guarding themselves before their Father in heaven, saying before Him (as it were): "L–rd of the universe, we sinned before You by caviling against You at the sea." "and the waters were sweetened": R. Yehoshua says: They were bitter for a short while and they were sweetened. R. Eliezer Hamodai says: They were bitter from the beginning, "the waters" being written twice.