New Defender's Study Bible Notes
2:18 beasts of the field. When Israel is restored, God will also restore the primeval relationships among the animals (compare Isaiah 11:6-9; 65:25).
2:18 lie down safely. At the same time, world peace will be enforced by the Prince of Peace (Isaiah 2:2-4; Micah 5:1-5; Isaiah 9:6-7).