Numbers 14:35

14:35 I, the Lord, have said, “I will surely do so to all this evil congregation that has gathered together against me. In this wilderness they will be finished, and there they will die!”’”

Numbers 16:11

16:11 Therefore you and all your company have assembled together against the Lord! And Aaron – what is he that you murmur against him?” ¹ 

[16:11]  ¹ sn The question indicates that they had been murmuring against Aaron, that is, expressing disloyalty and challenging his leadership. But it is actually against the Lord that they had been murmuring because the Lord had put Aaron in that position.