Seven seals kept the scroll shut. They had to be opened to show God’s plan for heaven and earth.
This was the first set of seven things that prepared the world for God’s plan. What John saw in the vision in heaven led to things that happened on earth.
When the Lamb opened the first four seals, John saw horses with their riders. These were signs of evil things that happen and that human beings do to one another.
Humans seek to have victory over one another like the rider on the white horse. Like the rider on the red horse, they destroy peace. Like the rider on the black horse, they deal with money unfairly. Like the rider on the pale horse, they destroy and murder one another.
The Lamb didn’t send these troubles to the earth. The opened seals revealed or uncovered how evil things already were on earth. Yet the Lamb and the four living creatures made something clear. God has authority over the world no matter how evil it is.