A picture of Heaven is a picture of worship. It’s all about our Lord Jesus and Father God, not us. It’s the fulfillment of God’s covenant with man. We see a picture of total worship.
We see more of the Great Tribulation period, as the Lord Jesus opens the 4th, 5th and 6th seals of the scroll. The great day of wrath - God’s righteous justice - has come upon the earth.
Jesus Christ is the only one worthy to open the scroll. We look into the future, as we see Jesus open the first of the seven seals. This sets loose a white horse and rider on the earth, representing the Antichrist.