You Did This in the Dark, but Something Horrible Happens in the Light

In first chronicles, we have a story that we're goin to get to eventually in second samuel here. But it's the story of david taking a census. David wants to number the people of israel. And joab, his actual right hand guy, is saying, i i don't this is not a good idea. But  david insists and wants tonumber the people. Now why is it wrong for him to want to do so? He's takin, in some ways, he's taking ownership, or taking possession of them. We need god's grace because we say, yet, god could be me doing the thing that ends up destroying us all