There is a principle embedded in the human soul that neuroscience has confirmed but Scripture announced long before: you become what you behold. Extended, attentive contemplation of anything shapes the mind, the desires, and eventually the life around its object. This is why advertising works, why pornography destroys, why extended meditation on grievances produces bitterness, and why people who spend decades with the same person come to resemble one another.

Paul applies this principle to the spiritual life with a precision that should arrest every person who has ever wondered why they are not changing. The reason you are not being transformed is not primarily a failure of discipline. It is a failure of attention. You have not been beholding. Or you have been beholding the wrong things. And the direction of transformation follows the direction of your gaze.