Let the Mountains Sing!
This song was inspired by Jeremiah 20:9(b)...

"But [His word] was in my heart like a burning fire Shut up in my bones; I was weary of holding [it] back, And I could not."

and
Isaiah 55:12...

"For you shall go out with joy, And be led out with peace; The mountains and the hills Shall break forth into singing before you, And all the trees of the field shall clap [their] hands.

Oh, what a day that will be!