Bede — on Rev 1:4 (Commentary on Revelation)

“Grace to you, etc. He wishes us grace and peace from the eternal God the Father, and from the sevenfold Spirit, and from Jesus Christ, who in the assumed man bore witness to the Father. He names the Son third, of whom he was going to speak more. He names him last as well, because he is the first and the last, since he had already named him in the Father by saying, who is to come.”