Numbers 24:10

‘And Balak's anger was kindled against Balaam, and he smote his hands together, and Balak said to Balaam, “I called you to curse my enemies, and, behold, you have altogether blessed them these three times.” '

By this time Balak was very angry. He smote his hands together in his fury and cried, ‘I called you to curse my enemies and --- you have blessed them three times.' A threefold blessing was completeness of blessing. Thus instead of a curse they had received multiplied blessing. The very opposite of what Balak had wanted had been accomplished.