We must now consider what pertains to Christ's unity in common.
For, in their proper place, we must consider what pertains to unity and plurality in detail: thus we concluded ( Q ) that there is not only one knowledge in Christ, and it will be concluded hereafter ( Q , A ) that there is not only one nativity in Christ.
Hence we must consider Christ's unity (1) of being; (2) of will; (3) of operation.
Under the first head there are two points of inquiry:
A Whether Christ is one or two?
A Whether there is only one being in Christ?