Numbers 20:19-21

¹⁹And the children of Israel said unto him: 'We will go up by the highway; and if we drink of thy water, I and my cattle, then will I give the price thereof; let me only pass through on my feet; there is no hurt.'

²⁰And he said: 'Thou shalt not pass through.' And Edom came out against him with much people, and with a strong hand.

²¹Thus Edom refused to give Israel passage through his border; wherefore Israel turned away from him.