You cannot escape God's presence; the Lord's presence is everywhere.

In Genesis 18 the Lord made Himself seen before Abraham and yet we know that the Lord is always there.

This brings up a thought: since the Lord is always present but not always seen shouldn't I live as if the Lord is always there?
The answer is yes!
Abraham responds to God's seen presence, and it is a great example on how you and I must live our lives in the presence of the Lord even though we do not see the Lord.