Kehillah in Corinth I 10:1-2

Orthodox Jewish Bible

10 I do not want you to be without da’as, Achim b’Moshiach, that Avoteinu all were under the anan (cloud, SHEMOT 13:21-22) and passed through the sea [SHEMOT 14:22-25],

² And all into Moshe Rabbenu were given tevilah in the anan (cloud) and in the sea,