How Do You Know That Natural Numbers Are Infinite?

No human has ever been able to explicate the natural numbers. How is that possible? Start to just wonder about that's a mysterious thing. We can have as many marbles as we want. It's infinite. So enthough your mind is too finite to be able to count all the numbers,. it's still capable of grasping infinity, this numerical infinity, all at once. But if i ask you, what are the steps? Show me the steps. Prove to me how you understand or how your mind grasped infinity. In this case, you can't do it. Because when i askYou to demonstrate every single step of how you grasp infinity, that itself would be infinite