A very fun sound world!
You might be letting yourself in for some trouble at bar 13 beat 4, since all parts have big leaps simultaneously. There is a big chance of the tuning suffering in a live performance. That said, since this is a very short exercise, people could just devote a lot of practice time to that one spot.
For those playing along at home, some things that might help a choir tune big leaps:
1. Use accompaniment to help singers seize the key again quickly if they miss their jump.
2. Only leap with one part at a time, so that if they don't stick the landing, the other parts will easily provide a steady foundation to help them readjust quickly.
3. Give a part a brief rest so they can prepare their vocal placement to leap more gracefully. Even just a tiny moment of disconnect will help. Here, the way you have set the text to the music gives a natural pause if you just read the line aloud, which means singers could either disconnect the two notes of the leap, (do it non legato), add an eighth rest to take a full breath, or, given the nature of the piece, even take it out of time with a longer pause (rubato) to get as much time as they need to reset vocally and have their next note firmly in mind. If someone sings your exercise, they would probably take some sort of a pause, since the text allows it, so nice job there!
Also, I particularly love your first "their soul is melted." The harmony sounds very melty. 🙂