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Why did Elisha say that Na'aman should come to him? When he came, Elisha sent a Shali'ach, did not leave his house to see him. He could have sent a Shali'ach without Na'aman coming!
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Malbim: Even though he could have healed him from afar, he wanted him to come, so he will know 1 that "Yesh Navi b'Yisrael", i.e. Hashem's Shechinah dwells on them.
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Why will he know this only if he comes? Perhaps even Na'aman would be able to sense the Shechinah. Alternatively, Na'aman would see that Elisha knew to send for him just when he came outside his door, before he called to him. (PF)
