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.

923. 'And he offered burnt offerings on the altar' means all worship stemming from those goods and truths. This is evident from what has been stated up to now. Burnt offerings were the chief features of the worship of the representative Church, as at a later time were sacrifices. These will in the Lord's Divine mercy be dealt with later on. That burnt offerings taken as a whole mean representative worship is also clear from the Prophets, as in David,

Jehovah will send your help from the Sanctuary, and give you support from Zion. He will remember all your offerings, and accept your burnt offering as fat. Psalms 20:2-3.

And in Isaiah,

Whoever keeps the sabbath from profaning it, I will bring them to My holy mountain. Their burnt offerings and their sacrifices will be accepted on My altar. Isaiah 56:6-7.

Here 'burnt offerings and sacrifices' stands for all worship, 'burnt offerings' for worship stemming from love, 'sacrifices' for worship stemming from faith derived from love. As is common in the Prophets, internal things are here being described by those that are external.