Ephesians 1:22

He put all in subjection under his feet, and gave him to be head over all in the assembly,
- Ephesians 1:22

He put all in subjection under his feet - Paul alludes to Psalm 110:1 again to show that all have been put under the Lordship of Christ.

and gave him to be head over all in the assembly - The Two Ways caused there to be two bodies in the Church. Paul says that Christ is head over all.