The grace of God means something like: Here is your life. You might never have been, but you are because the party wouldn't have been complete without you.
We cannot make the Kingdom of God happen, but we can put out leaves as it draws near. We can be kind to each other. We can be kind to ourselves. We can drive back the darkness a little. We can make green places within ourselves and among ourselves where God can make his Kingdom happen.
Lord, I believe; help my unbelief' is the best any of us can do really, but thank God it is enough.