Eph. 5:21 is one New Testament verse that encourages mutual submission. 1 Peter 5:5 is another. This post looks at the Greek grammar and vocabulary of 1 Peter 5:5.
In this post, I show how the word kephalē (head) is used in 1 Clement, in the context of mutual submission, and I show how the authors regarded women.
In 1 Corinthians 16:15-18 Paul mentions Stephanas and his colleagues. There are a few lessons about Christian service and submission that can be gleaned here.