Today we read one chapter of Revelation and the final chapter of Malachi.
Revelation 21. The apostle John saw in a vision how all things are made new, the New Jerusalem was before his eyes and the glory of the New Jerusalem was on full display. there was no temple in it, all glory goes to the Lamb, the Alpha and Omega!
Malachi 4 is all about the great and dreadful day of the Lord, but before that God will send His messenger Elijah.