And the LORD appeared to Abram, and said, To your seed will I give this land: and there built he an altar to the LORD…
Abram set up his altar along the line of his march. Blessed are they whose way is known by marks of worship. The altar is the highest seal of ownership. God will not lightly forsake His temple. This setting up of the altar shows that our spiritual life ought to be attested by outward sign and profession. Abram had the promise in his heart, yet he did not live a merely contemplative life; he was not lost in religious musings and prophesyings — he built his altar and set up his testimony in the midst of his people, and made them sharers of a common worship.
(J. Parker, D. D.)
Parallel VersesKJV: And the LORD appeared unto Abram, and said, Unto thy seed will I give this land: and there builded he an altar unto the LORD, who appeared unto him.