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.

2150. 'And he saw' means when He recognized this. This is clear from the meaning in the internal sense of 'seeing' as understanding and recognizing, and also of becoming enlightened, dealt with in 1584. Nothing is more common in the Word than for 'seeing' to have such meanings Here the meaning is that He recognized the presence of perception from the Divine, as just stated.