Then the sentence was passed; all of us were condemned to the beasts. We were overjoyed as we went back to the prison cell.

“Then the sentence was passed; all of us were condemned to the beasts.  We were overjoyed as we went back to the prison cell.” (from Perpetua’s Vision on pp. 20-21 of the pdf of Christian Scriptures on the Moodle page; this quote is on p. 430 of the text copied in that pdf.)
Explain why a sentence of death for being a Christian is an occasion for joy, as far as Perpetua is concerned.  In what way does this acceptance of martyrdom fit with basic Christian beliefs and practices? Can this in any way be related to things Jesus says? 
2 pages, typed and double-spaced.