We have a big key here. This is what impresses God—being like a little child. The child is being held up here, by Christ, as being the ideal. But "the ideal" of what? Innocence? I do not think so. Purity? I do not think so. Faith? No, I do not think so. I am not saying that a child cannot be innocent, and pure, and also express kinds of faith. I do not think that fits, though, into this context. Since the word "humble" appears there, I think it is unconcern for status.