Matthew 6:21

Clement of Alexandria Stromata Book VII

commandments, preferring these things from believing them to exist. "For where any one's mind is, there also is his treasure."[118]

Tertullian Ad Martyras

The mind compasses the whole man about, and whither it wills it carries him. But where thy heart shall be, there shall be thy treasure.[5]

Constitutions of the Holy Apostles Book III

For she that uses herself to nothing but talking of money, worships mammon instead of God,-that is, is a servant to gain, but cannot be pleasing to God, nor resigned to His worship; not being able to intercede with Him continuously on account that her mind and disposition run after money: for "where the treasure is, there will the heart be also."[27]

Origen Commentary on Matthew Book X

For pain is a worm and a moth, which wounds the heart which has not its treasures in heaven and spiritual things, for if a man has his treasure in these-"for where the treasure is, there will the heart be also,"[77]