Numbers 14:41 KJV
And Moses said, Wherefore now do ye transgress the commandment of the Lord? but it shall not prosper.
Numbers 14:41, King James Version
In context
40 And they rose up early in the morning, and gat them up into the top of the mountain, saying, Lo, we be here, and will go up unto the place which the Lord hath promised: for we have sinned.
41 And Moses said, Wherefore now do ye transgress the commandment of the Lord? but it shall not prosper.
42 Go not up, for the Lord is not among you; that ye be not smitten before your enemies.