This song is about the Lord Jesus Christ in the Garden of Gesthemane. Why is it a happy song? Because if the Lord Jesus had not suffered, died and rose again, I we would have NO Chance at eternal life...so with this song, I rejoice in his Passion for me in the garden...this song is to Him who bore my sicknesses and carried my griefs...to Him who died in my place! I am eternally grateful. Jesus began to Set Me Free all alone...in the Garden...in the Night.