T. Austin-Sparks emphasizes the transformative shift from earthly to heavenly perspectives in the book of Ephesians, illustrating how true spiritual enlargement occurs when believers sever ties with earthly values and embrace the preeminence of spiritual values found in Christ. He contrasts the carnal and religious earthbound perspectives of Corinthians and Galatians with the elevated spiritual realm of Ephesians, where the focus is on knowing Christ in a spiritual way. Sparks highlights that spiritual value, rather than earthly success or numbers, is what truly matters to God, urging believers to meet one another on the ground of Christ, the 'one new man.' He concludes that spiritual enlargement is achieved by prioritizing spiritual realities over earthly concerns, leading to deeper fellowship and unity among believers.