John Calvin Commentary Hebrews 11:15

"And if indeed they had been mindful of that [country] from which they went out, they would have had opportunity to return." — Hebrews 11:15 (ASV)

And truly if they had been mindful, and so on. He anticipates a potential objection—that they were strangers because they had left their own country. The apostle addresses this objection, saying that even though they called themselves strangers, they still did not think of Mesopotamia. For if they had desired to return, they could have done so. But they had willingly banished themselves from it; indeed, they had disowned it, as if it did not belong to them. By another country, then, they meant that which is beyond this world.