23 His son by the slave woman was born according to the flesh, but his son by the free woman was born as the result of a divine promise.

Read Galatians 4:23 Using Other Translations

But he who was of the bondwoman was born after the flesh; but he of the freewoman was by promise.
But the son of the slave was born according to the flesh, while the son of the free woman was born through promise.
The son of the slave wife was born in a human attempt to bring about the fulfillment of God’s promise. But the son of the freeborn wife was born as God’s own fulfillment of his promise.