Speaking to us in a 2012 interview, Mac Powell recalled his initial reluctance to contribute a vocal on the original City On A Hill recording of the song. "You know what's funny is I'm a big The Choir fan, which was Steve's band, they're from California," he said. "And I don't want to say I grew up with them, but I listened to them in my college years. They were the first alternative rock Christian band I'd ever heard. And so when I got a call from Steve to be part of this record, I couldn't say no, because I love Steve and his music and his songs. I'd written a song I did for the record City On A Hill: Songs of Worship and Praise and he said, 'I like it, but I really would love to hear you sing on this song,' and he sent me 'God of Wonders.' I thought, Well, that's all right. (Laughs) I thought, This song is just okay. I dig it all right. It's a good song."
"I had no idea how great a song it was," Powell continued. "And that goes to show, you just never know. And now of course, with 20/20 hindsight, I see the beauty in the song, but at the time I didn't realize it. So I basically was told by my manager, Hey, when you go in to sing the song for Third Day that you write, they're going to want you to sing this other song, don't do it. Because we don't need your voice on more songs. I said, Okay. So I went in and we were in the studio. They came to Atlanta, we recorded. And Steve said, 'Hey, before you leave, can I get you to sing a verse on this song?' And I said, 'Sure.' Because I could not say no to Steve. And it ended up being a good thing for everybody."