Our God should be greater above all things. He must be higher than any other. It is because His power is awesome. That's how sovereign our Lord is! He must increase in prominence, but we must decrease.
Jesus must become more important, while we become less important. He must become greater and greater; we must become less and less. We are just human beings and we have no power over anything. But our God is the King of Kings and the Lord of Lords. He deserves all the glory. That is what humbleness is all about.