Isaiah 55:12

Isaiah 55:12. For ye shall go out with joy, and be led forth with peace: the mountains and the hills shall break forth before you into singing, and all the trees of the field shall clap their hands.

There shall seem to be joy everywhere when there is joy in your heart. When you receive Christ you have put everything round about you into its true position. The whole creation is a vast organ, and man puts his tiny fingers on the keys and evokes thunders of harmony to the praise of God. When the heart is filled with joy and peace, mountains and hills break forth before us into singing, and all the trees of the field clap their hands.