Everyone everywhere has always seen that the world's not like it should be. In other words, everyone everywhere has always seen that the world lacks God's peace, His shalom.
Shalom is good for the body, not just the soul. It’s a holistic state of flourishing and goodness. It’s harmony and delight and wholeness and blessing and salvation. It’s the way things ought to be.
And when Jesus was born, the angels announced that shalom had arrived. Glory to God in the highest!