Augustine of Hippo
The Septuagint states: But I took your father Abraham from beyond the river and led him throughout the land. In the Hebrew, this can be literally interpreted as ‘I brought him into the land of Canaan.’ It is indeed remarkable that the translators among the seventy chose to use ‘the whole land’ rather than ‘the land of Canaan’ here, unless they perceived the prophecy from a broader perspective, as they recognized the already fulfilled historical promise of the Lord. It was clearly foretold what was to transpire in Christ and the Church, when the genuine offspring of Abraham would be recognized not in those born of the flesh, but in those born of the promise.