linguistic:paraphrasing, structural:scholar_edition
John 10:30

John 10:30 – Nontrinitarians such as Arians believe that when Jesus said, "I and the Father are one," he did not mean that they were actually "one substance", or "one God", or co-equal and co-eternal, but rather that he and the Father have a "unity of purpose", and that the context indicates that Jesus was saying that they were "one" in pastoral work. The point being that the Father and the Son were united in the divine work of saving the 'sheep'. Nontrinitarian Christians also cite John 17:21, wherein Jesus prayed regarding his disciples: "That they may all be one, as you, Father, are in me, and I in you, that they may be in us," adding "that they may be one even as we are one". They argue that the same Greek word (hen) for "one" throughout John 17 indicates that Jesus did not expect for his followers to literally become a single Being, or "one in substance", with each other, or with God, and therefore that Jesus also did not expect his hearers to think that he and God the Father were one entity either.