Eastern Catholic Churches affirm John 1:1 as foundational statement of Christ's full divinity and pre-existence. The passage is woven into Eastern Catholic liturgical theology. The Eastern patristic tradition (Cappadocian Fathers, St. John of Damascus) grounded their understanding in Johannine theology.

As Catholic churches in communion with Rome, Eastern Catholics maintain full Chalcedonian Christological precision. The weekly Divine Liturgy incorporates John 1, emphasizing the incarnation of the divine Word. This is non-negotiable in Eastern Catholic faith and worship.