For where your treasure is, there will your heart be also.
Read Chapter 12
Augustine of Hippo
AD 430
If you lack earthly riches, do not seek them in the world by evil deeds. If they fall to your lot, let them be stored up in heaven by good works. A manly Christian soul should neither be overjoyed at acquiring them nor cast down when they are gone. Let us instead reflect on what the Lord says: “Where thy treasure is, there your heart will be also.” Surely when we hear that we should lift up our hearts, the familiar answer that we make should not be a lie.
For where your treasure Isaiah , there will your heart be also. This is a conclusion from the former, showing why our Lord said, "Sell that ye have," namely, that you may show that your heart is not in your money but in heaven. If, therefore, you place your treasure gained by alms-giving in heaven, you will show that your heart is fixed in heaven, not on earth—in God, not in gold. For a man"s treasure is that which he loves—holds dear—values at a great price, on which he rests his hopes. See Matthew 6:20.
All this is what that treasure brings about. Either through almsgiving it raises the heart of a man into heaven, or through greed it buries it in the earth. That is why he said, “For where your treasure is, there your heart will be also.” O man, send your treasure on, send it ahead into heaven, or else your Godgiven soul will be buried in the earth. Gold comes from the depth of the earth—the soul, from the highest heaven. Clearly it is better to carry the gold to where the soul resides than to bury the soul in the mine of the gold. That is why God orders those who will serve in his army here below to fight as men stripped of concern for riches and unencumbered by anything. To these he has granted the privilege of reigning in heaven.