Joshua 9:18-20

18And the children of Israel did not smite them, because the princes of the assembly had sworn unto them by Jehovah the 1God of Israel. Then all the assembly murmured against the princes.

19And all the princes said to all the assembly, We have sworn unto them by Jehovah the 2God of Israel, and now we may not touch them.

20This we will do to them, and let them live, lest wrath come upon us, because of the oath which we swore unto them.