The dove has always been used as s symbol of peace. Why is that? Because there are a couple of places in Scripture that point to the dove as a symbol of the Holy Spirit. The first is found in the story of Noah and the flood.
Following the flood, Noah sent out a dove to see if the waters had rescinded upon the earth because he wished to know if it was safe to leave the ark. The first time the dove was sent out, it simply returned to him, signifying that there was no dry land yet….