'Double cross' in the Bible

Balaam responded to Balak's entourage by saying, "Even if Balak were to give me his house full of silver and gold, I won't double-cross the command of the LORD my God in even the slightest way.

"Even if Balak gives me his palace full of silver and gold, I won't double-cross the command of the LORD and do anything whether good or evil on my own initiative, because I'm going to say whatever the LORD says.'