Ezekiel 36:20

“And when they came to the nations to which they went, they profaned my holy name in that men said of them, “These are the people of Yahweh, and have come forth out of his land.”

But the other consequence was that it reflected on God's name and reputation. By what had happened to them they had brought God's name into disrepute, because the nations saw that they had had to leave the land and thus assumed that Yahweh their God could only be weak and helpless. Thus they degraded Yahweh to being a minor god of no importance.