New Revised Standard Version, Anglicised Catholic Edition
18 Then Balaam uttered his oracle, saying:
‘Rise, Balak, and hear;
listen to me, O son of Zippor:
19 God is not a human being, that he should lie,
or a mortal, that he should change his mind.
Has he promised, and will he not do it?
Has he spoken, and will he not fulfil it?
20 See, I received a command to bless;
he has blessed, and I cannot revoke it.