Listed in the Cleveland Index of Negro Spirituals as "Jesus Goin' A-makeup My Dyin' Bed." Reference: Kennedy, "More Mellows," p. 105. It is compared with "When I Die," in Grissom, "Negro Sings A New Heaven," p. 4.
In the lyrics of Blind Willie Johnson as printed in Harry's website, the last word of the first line is moan, not mourn, as shown in the posting by Joe, above, from a Dylan transcription of Johnson.
It also has been posted by Joe Offer in Lyr Add: Lomax Recording Trip Index, Dec. 4, 2001, as Jesus Goin' Make My Dyin' Bed I, II.