en_tn/rev/04/01.md

after these things

after what John saw after Jesus spoke to the seven churches (Revelation 2:1).

that a door had opened to heaven

AT: "an entrance to heaven"

jasper and carnelian

semi-precious stones. We are uncertain what specific colors they are. (See: rc://en/ta/man/translate/translate-unknown)

rainbow

the colors people can see when the sun shines behind them and rain is falling in front of them

emerald

a green semi-precious stone