5 After these things I looked, and the temple of the tent of the testimony in heaven was opened.
the temple of the tabernacle of the testimony in heaven was opened – from Acts 7:44-45, Heb 8:5, we understand that when Moses saw a vision of the tabernacle of testimony, and constructed it according to what he saw. More specifically though, this is the temple of the tabernacle, that is the end time Church and its dimensions, which are opened for the saints to see. The meaning is that the measurements that are required for the spirit of God to come in, are revealed to the saints, as described in Ezek 43:2.