When the roll is called up yonder, (If any roll there be) — And the saints have ceased to ponder, (If any saints there be) — I'll be there to share the story Of that everlasting glory, (I'll be there, maybe).
Anyone who has sung "When the Roll Is Called Up Yonder" will hear it echoing here, only with a sly twist. The speaker starts out sounding like the hymn's confident believer, picturing a heavenly roll call and a gathering of saints. But the brackets keep interrupting. "If any roll there be." "If any saints there be." Each line of certainty gets quietly undercut by a whispered doubt.
By the end, the speaker is still promising to "share the story / Of that everlasting glory," yet the final line sinks the whole promise: "(I'll be there, maybe)." Even the speaker's own attendance is uncertain.
The mood is wry and gently teasing rather than angry or bitter. The speaker doesn't attack faith, just declines to pretend to a confidence they don't feel. The result is a small, witty confession of uncertainty, made all the funnier by the grand language of "everlasting glory" it sits beside.