According to their tribes; in the order appointed, Num 2. Came upon him, i.e. inspired him to speak the following words, and so constrained him again to bless those whom he desired to curse.
Related Commentaries of Numbers 24:2
Numbers 24:2
2 And Balaam lifted up his eyes, and he saw Israel abiding in his tents according to their tribes; and the spirit of God came upon him.