 Whining is that spirit that constantly rejects negatively what God has said. Well, how are we going to do this? Nobody's ever done that before. I don't think I can do this. It says they grumbled against God. Now, if something is wrong, you ought to complain about it. If something needs to be corrected, yeah, that's what he's talking about. He's talking about grumbling against what God had told him to do.