The Kingdom of God is not hard to understand.
It is not a mystery, but it is rare and therefore unusual.
Righteousness, peace, and joy. That's God's Kingdom.
It is far superior to anything earthly. These three things reign over every aspect of life, if we choose to let them.
The sparcity of God's Kingdom on the earth is not God's doing. He offers it in abundance.
So what's the problem? Why don't we see the abundance of righteousness, peace, and joy?
Because it can only be received by faith. You have to believe God has it and wants you to have it. Then, you take it as your own.
Or, you can sit around like most everyone else and wait for your circumstances to bring peace and joy. Just know, it'll never happen.
As long as we let circumstances rule and reign over our lives, the Kingdom of God cannot. It's one or the other. You choose.