2 John 1:9
Anyone who runs ahead and does not continue in the teaching of Christ does not have God; whoever continues in the teaching has both the Father and the Son — to 'run ahead' (proagōn) suggests those who innovate beyond apostolic teaching, pushing beyond the deposit of faith into speculative theology or revised Christology, and this deviation amounts to a severance from God himself. The stark assertion 'does not have God' indicates that doctrinal error is not a minor failure but a relational rupture with the divine source. In contrast, 'continuing in the teaching' (menōn en tē didachē) secures communion with both Father and Son, making doctrinal faithfulness inseparable from spiritual relationship.