Now the Lord had said unto Abram - It pleased God, who has often been found of them who sought Him not, to reveal Himself to Abraham perhaps by a miracle; and the conversion of Abraham is one of the most remarkable in Bible history.
Get thee out of thy country - His being brought to the knowledge and worship of the true God had probably been a considerable time before. This call included two promises: the first, showing the land of his future posterity; and the second, that in his posterity all the earth was to be blessed (Gen 12:2). Abraham obeyed, and it is frequently mentioned in the New Testament as a striking instance of his faith (Heb 11:8).