Walk
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.
Deuteronomy 22:20-21
20
But if this thing be true, that the tokens of virginity were not found in the young lady;
21
then they shall bring out the young lady to the door of her father's house, and the men of her city shall stone her to death with stones, because she has done folly in Israel, to play the prostitute in her father's house: so you shall put away the evil from the midst of you.