Several groups sing this with slightly different lyrics
here is one of the versions:

Come On Over to the Winning Side

If you're getting tired of losing life's war
And you keep searching for something worth fighting for
Well, God's got an army
We've been proved and tried
So come on over to the winning side.

(Chorus)
Come on over to the winning side.
We're following Jesus
We've got our banner held high
We're God's mighty army
We'll not be denied
So come on over to the winning side.

We marched through the fire
But the fire wouldn't burn...oh no
We marched through the water,
But ol' Pharaoh wouldn't learn.
Then we marched through the lion's den
And ol' Daniel replied
These lion's can't hurt me,
Cause I'm on the wining side

I don't know who sings this song but I would love to have the lyrics to it thank you