The word Overseer is interesting. It can mean to supervise or to be a superintendent in English. In the Bible it's only used a handful of times to mean a watchman, superintendent, guardian. It was used in the New Testament to describe church officials, those responsible for the spiritual welfare of the church and its governance. It's similar to the terms used for elder, shepherd, and deacon.
1 Peter 2:25 uses the word Overseer, episkopos in the Greek, along with only four other verses: 1 Timothy 3:2; Titus 1:7; Acts 20:28; and Philippians 1:1.
It's a precious truth to me to know as Peter said, "For we were like sheep going astray, but now you have returned to the Shepherd and Overseer of your souls."
Jesus is our Pastor, our elder, our Overseer, overseeing our souls.
O is for Overseer.