go out. go forth: i.e. from the lands of your wandering.
peace. prosperity.
break forth... singing. Figure of speech Prosopopoeia. See note on Isaiah 14:7.
the field: i.e. the open country beyond the limits of cultivation.
Related Commentaries of Isaiah 55:12
Isaiah 55:12
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.