1st book of Kings 19:16-21.
The Lord said to Elijah: “You shall anoint Elisha, son of Shaphat of Abel-meholah, as prophet to succeed you.”
If anyone escapes the sword of Hazael, Jehu will kill him. If he escapes the sword if Jehu, Elisha will kill him.
Yet I will leave seven thousand men in Israel–all those who have not knelt to Baal or kissed him.”
Elijah set out, and came upon Elisha, son of Shaphat, as he was plowing with twelve yoke of oxen; he was following the twelfth. Elijah went over to him and threw his cloak over him.
Elisha left the oxen, ran after Elijah, and said, “Please, let me kiss my father and mother good-bye, and I will follow you.” “Go back!” Elijah answered. “Have I done anything to you?”
Elisha left him and, taking the yoke of oxen, slaughtered them; he used the plowing equipment for fuel to boil their flesh, and gave it to his people to eat. Then he left and followed Elijah as his attendant.