What is the context?
The reason for the warning now becomes explicit: deceivers refuse to confess Jesus Christ’s coming in the flesh. John calls such a person the deceiver and the antichrist. In this sentence the description applies to the person promoting that denial; the passage gives no name or date for a future world ruler.
The readers must watch themselves, hold to Christ’s teaching and seek a full reward. The person who runs ahead without remaining in that teaching does not have God. Claiming to advance beyond the received teaching is therefore no proof of spiritual maturity.
The command against receiving or greeting such a teacher is tied to sharing in that person’s evil work. The issue is how a welcome can help teaching spread. Third John 5–8 supplies the positive counterpart: supporting faithful messengers makes believers fellow workers for the truth.
How is this passage commonly understood?
The Catholic Church and Reformed confessions affirm that Christ truly became human while remaining truly God; see Catechism 464–465 and Westminster Confession 8.2. The denial described in verse 7 concerns that real coming in the flesh.
Readers differ over how to understand not having God in verse 9. Wesley treats it as not having God as one’s Father and God. The USCCB note connects fellowship with God to holding the teaching about Christ. A Free Grace reading presented by the Grace Evangelical Society understands the warning as loss of fellowship and God’s support in a believer’s work, while distinguishing that from loss of eternal life. That is this organization’s reading, rather than the position of all evangelicals.
Wesley understands the forbidden greeting as encouragement of the teacher’s work; the Grace Evangelical Society likewise distinguishes supporting a traveling teacher from ordinary conversation. The USCCB note describes a more complete avoidance of dangerous traveling teachers. These explanations differ in how widely the restriction applies, while sharing the concern that hospitality can assist deception.
Where does this fit in God's plan?
John 1:1–5, 14–18 identifies the Word as God and describes the Word becoming flesh and making the Father known. The letter’s warning protects that revelation of who Jesus is. The truth about His real human life belongs to how God has made Himself known, rather than being an optional detail that a teacher can discard.
What is our position?
We don't have a position on this passage yet. When our study reaches a conclusion the text supports, it will appear here.