From “Listen Lord: A Prayer” by James Weldon Johnson. The book in its entirety is online here

And now, O Lord –
When I’ve done drunk my last cup of sorrow –
When I’ve been called everything but a child of God –
When I’m done travelling up the rough side of the mountain –
O – Mary’s Baby –
When I start down the steep and slippery steps of death –
When this old world begins to rock beneath my feet –
Lower me to my dusty grave in peace
To wait for that great gittin' up morning – Amen.