Deuteronomy 25:10

Verse 10. And its quality shall afterwards be accounted useless in the spiritual life, and an apparent good that has no connection with progress in regeneration. (It is a law of the spiritual life that all good that exists merely in thought, and is not brought out into the life when occasion presents itself, is dissipated from the mind—that is, if the opportunity was fully perceived, and rejected from aversion in the will.)