1 Cor 15.28 is often regarded as problematic for ‘divine Christology’ in Paul, because the Son's final submission to the Father is held to tell against his ontological equality with the Father. The current article argues that this conclusion involves a category mistake. The ‘grammar’ of Paul's Christology requires that we distinguish between what Paul says of and on the basis of Christ's divinity, and what Paul says of and on the basis of Christ's humanity, a strategy sometimes called ‘partitive exegesis’. The article evaluates recent solutions to this problem, warrants partitive exegesis from within 1 Corinthians, and offers a partitive reading of 1 Cor 15.28: the Son submits to the Father as the final act of an office he holds as a human, in order to perfect the human vocation of vicegerency over creation.