Matthew
Matthew 6:21ESV·traditional attribution

For where your treasure is, there your heart will be also.

John Calvin Reformed @genevareformer

21. Where your treasure shall be By this statement Christ proves that they are unhappy men who have their treasures laid up on the earth: because their happiness is uncertain and of short duration. Covetous men cannot be prevented from breathing in their hearts a wish for heaven: but Christ lays down an opposite principle, that, wherever men imagine the greatest happiness to be, there they are surrounded and confined.

Matthew Henry Presbyterian @wholebiblehenry

Worldly-mindedness is as common and as fatal a symptom of hypocrisy as any other, for by no sin can Satan have a surer and faster hold of the soul, under the cloak of a visible and passable profession of religion, than by this; and therefore Christ, having warned us against coveting the praise of men, proceeds next to warn us against coveting the wealth of...

Commenting on Matthew 6:19-24

John Gill Reformed Baptist @doctorgill

For where your treasure is, there will your heart be also. This seems to be a proverbial expression, and contains in it another reason, dissuading from worldly mindedness; because of the danger the heart is in of being ensnared and ruined thereby: and the sense of it is, if your treasure is on earth, and lies in earthly things, your hearts will be set upon...