So flesh man will be in the Kingdom of God?
Not the sort of flesh you are familiar with. Jesus has a body that can eat and drink. He is a being of higher dimensional capabilities than you or me now. But when we see Him we will see Him as He really is because when we see Him we will be like Him. Refer to the Physics lesson Jesus gave to Philip in John 14, to see how this works. If you have questions about it, I will be glad to share a few data points which God has given me over the decades.