I think the themes of both God and being a bride can fit in, but separately. The song is about the night someone has just gotten engaged. She's in shock and awe that now one person treasures her above all the rest of the earth.
Bearing the gift of a new heart
Patience ablaze, I'm slowly burning
Refined, I'll become the most dazzling precious treasure
I'll be treasured over all the Earth
The burning is meant as the feeling of love that washes over her now. "New heart" and "refined" as well as "Just look at what He's done" at the end of the song illustrate how she had trusted her life to God first, and this is the reason she can now feel such pure romantic love.
I think the themes of both God and being a bride can fit in, but separately. The song is about the night someone has just gotten engaged. She's in shock and awe that now one person treasures her above all the rest of the earth.
Bearing the gift of a new heart Patience ablaze, I'm slowly burning
Refined, I'll become the most dazzling precious treasure I'll be treasured over all the Earth
The burning is meant as the feeling of love that washes over her now. "New heart" and "refined" as well as "Just look at what He's done" at the end of the song illustrate how she had trusted her life to God first, and this is the reason she can now feel such pure romantic love.