Adam Clarke on 1 Chronicles 11:22

Benaiah - slew two lion-like men of Moab - The Targum says, "Benaiah was a valiant man, fearing sin, and of a righteous conduct in Kabzeel; he slew two of the nobles of Moab, who were like two strong lions. He was a great and righteous man as any in the second sanctuary. On a certain day, having struck his foot against a dead tortoise, he went down to Shiloh, and having broken pieces of ice, he washed himself with them, and afterward went up, and read the book of the law of the priests, in which much is contained, in a short winter's day, viz., the tenth of the month Tebeth."