Exodus 22:28-31 - Regulations Regarding Tribute And Holiness
28 Thou shall not revile the gods, nor {speak maliciously (LXX/NT)} of a ruler of thy people.
29 Thou shall not delay to offer from thy harvest, and from the outflow of thy presses. The first-born of thy sons thou shall give to me. 30 Likewise thou shall do with thine oxen, [and] with thy sheep. Seven days it shall be with its dam. On the eighth day thou shall give it me.
31 And ye shall be holy men to me. Therefore ye shall not eat any flesh that is torn of beasts in the field. Ye shall cast it to the dogs.