You might remember it now...
“Our Father, which art in heaven, Hallowed be thy Name. Thy Kingdom come. Thy will be done in earth, As it is in heaven. “
And I saw a new heaven and a new earth: for the first heaven and the first earth were passed away; and there was no more sea. Heaven is not coming to earth. There will be a new one.
God's kingdom is spiritual. The prayer is asking for people to know Him and to follow Him--not to bring the physical Heaven to a physical Earth.