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.

8417. 'And the people will go out' means the consequent life. This is clear from the meaning of 'going' as living or life, dealt with in 1293, 3335, 4882, 5493, 5605; and 'going out' here, that is, going to collect the manna, has a similar meaning. Regarding the meaning of 'going' as life, see also 8420.