Studie
56 For thy sister Sodom was not mentioned by thy mouth in the day of thy pride,
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.
10 For the mountains may depart, and the hills be removed; but my loving kindness shall not depart from you, neither shall my covenant of peace be removed," says Yahweh who has mercy on you.