Then Abram took Sarai his wife and Lot his brother’s son, and all their possessions that they had gathered, and the people whom they had acquired in Haran, and they departed to go to the land of Canaan. So they came to the land of Canaan.
Genesis 12:5 (NKJV)
The text says that Abram brought with him the "people he had acquired." It is literally translated "the souls he made."
The rabbis see this as "converts" in the Midrash. I suspect the Christian might see it that way, too.
But what I see is an echo of God creating.
Perhaps Abram was invited to be a part of the creation process – to breathe spiritual Life into otherwise dead people.