Numbers 22:20

If the men be come to call thee i.e. since the men have come this long distance to summon thee. The A.V. -if the men come to call thee" has sometimes given rise to the erroneous idea that God gave Balaam permission to go only if the messengers came to him in the morning and again asked him to accompany them, and that Balaam, in his eager desire to go, did not wait for this.