What did God promise about the glory of the rebuilt temple in Haggai 2?

Answer: Greater than the former

Though it looked like nothing to those who saw the old temple, God said, "The latter glory of this house will be greater than the former."

“‘Who is left among you who saw this house in its former glory? How does it look to you now? Does it not appear to you like nothing in comparison?’ The latter glory of this house will be greater than the former, says the LORD of Hosts. And in this place I will provide peace, declares the LORD of Hosts.””— Haggai 2:3, 2:9 (BSB)