Bible Verses About Spiritual Peace: Is through the atonement of Christ

And he is pierced for our transgressions, Bruised for our iniquities, The chastisement of our peace is on him, And by his bruise there is healing to us.

for he is our peace, who did make both one, and the middle wall of the enclosure did break down,

the enmity in his flesh, the law of the commands in ordinances having done away, that the two he might create in himself into one new man, making peace,

and through him to reconcile the all things to himself--having made peace through the blood of his cross--through him, whether the things upon the earth, whether the things in the heavens.