Walking represents living, and usually means living according to the true things taught to us by the Lord -- to "walk in His ways." When the Lord is pictured walking, it means life itself.
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It happened, when he saw her, that he tore his clothes, and said, "Alas, my daughter! You have brought me very low, and you are one of those who trouble me; for I have opened my mouth to Yahweh, and I can't goback."