Problem: God is omnipresent, that is, everywhere at the same time (Ps. 139:7–10). But this text declares that God “came down” to see the city that men had built. But if He is already here, then how can He “come down” here?
Solution: God “came down” as a theophany, which is a special localized manifestation of the presence of God. These theophanies often appeared in the OT. Once God appeared to Abraham as a man (Gen. 18:2). God also came down to speak to Moses (Ex. 3), Joshua (Josh. 5:13–15), and Gideon (Jud. 6) in a similar manner.