How do you think you'd feel to have a personal invitation from a King to come closer to him?
John receives such an invitation in Revelation 4, and he is captivated by all he sees. His record is so vivid as he depicts the throne, the one on the throne, and the sights around it.
And immediately I was in the spirit: and, behold, a throne was set in heaven, and one sat on the throne.
And he that sat was to look upon like a jasper and a sardine stone: and there was a rainbow round about the throne, in sight like unto an emerald."(KJV) -
First I take note of the open door. Isn't that a beautiful reminder of the veil between God and man that was torn? Jesus invites us personally to the throne of God.
Second John lets us know the voice inviting him to the throne is the voice of the same one in Chapter one. Let's revisit this passage in chapter 1:12-15 to confirm the owner of this voice.
"...I turned to see the voice that spake with me....one like unto the Son of man, clothed with a garment down to the foot, and girt about the paps with a golden girdle....and his voice as the sound of many waters." (KJV)
Yes, Jesus calls John to the throne.
Third, note that John remarks that instantly he was in the Spirit. It was in the Spirit that he was able to see what comes next.
When John gets to the place of the voice in Chapter 4 he sees a throne and one sitting on it. So who is on the throne? The one like unto the "son of man"- Jesus himself. How can we know this?
"The one sitting on the throne was as brilliant as gemstones—like jasper and carnelian. And the glow of an emerald circled his throne like a rainbow" Rev. 4:3 (NLT)
Why does this passage look familiar?