Every house that is raised up will one day fall to ruin

"...Every house that is raised up will one day fall to ruin, except the house of God; that will grow more massive and be better guarded day by day. Then serve the Court of God with all your might, that you may discover the way to a home in Heaven, and found an edifice that will endure forever."

-Baha'u'llah

https://bahai-library.com/rev_bahaullah_4/taherzadeh_revelation_bahaullah_4.txt