Exodus 32:29

32:29 Moses said, "Consecrate yourselves today to Yahweh, yes, every man against his son, and against his brother; that he may bestow on you a blessing this day."
-World English Bible

Other Translation

32:29 For Moses had said, Consecrate yourselves to day to the LORD, even every man upon his son, and upon his brother; that he may bestow upon you a blessing this day.
-King James Version