 knelt down, he wasn't moving forward anymore. He knelt down, he prostrated himself. So there's still a good amount of distance. If you, Lord, you are going to stretch forth your hand and touch him, well, your arms aren't made out of elastic. You can't just stretch out your arm 15 feet, right? You're not like Elastigirl from the movie The Incredibles. No. Lord, you must have walked toward the leper as he laid on the ground.