Brekelefuw

I transposed it from the chords you put in the original post. Those notes I posted are all for Bb trumpet. They are merely the notes that make up the chords you posted. You can play them, or make it a bit more interesting by connecting them with other scales degrees.
Look for notes that go between each chord by only a whole step or a half step. Playing them as the chords go by will make it seem like a counter melody to the one the church it singing.