Leviticus 10:16

And Moses diligently sought the go at of the sin-offering, for since its blood had been poured out at the altar of burnt offering, its flesh, being a sin-offering, should have been eaten by the priests in the Holy Place, and, behold, it was burned; and he was angry with Eleazar and Ithamar, the sons of Aaron, which were left alive, saying,

Thou shalt not go up and down as a talebearer among thy people; neither shalt thou stand against the blood of thy neighbor, as the false witness often does. I am the Lord. This involves, of course, "casting aside all inhumane conduct, all ill will, as manifested in malicious belittling, blackening, and slandering, and especially in attempts against the life of a neighbor, whether in court or in private life. " (Lange.)