The hymn is sung to the tune "Christ ist erstanden." Here's the third musical phrase:
In the Lutheran Worship version, the text here is "So let our song exulting rise," and the "ris[ing]" corresponds to the melody's ascent at the end. In The Lutheran Service Book version, the text is "So let our joy rise full and free," and since "rise" comes earlier in the line, this effect is lacking.