When a kid is born, not only is life introduced into the world, but all the lives around the newborn are also immediately changed. The precise moment a man meets his newborn, at which point he naturally transforms into a father, best illustrates this tremendous transition.

There is nothing more moving than when a guy becomes a father, even though the change may not be as physically evident as a person’s height or it may take up to nine months to complete. Watch how these men’s reactions to becoming parents changed the instant they laid eyes on their children.