The Lord concludes: "for where your treasure is, there will your heart be also." (Matt 6:21) Where should the heart of the disciple of the Lord Jesus be, but in heaven? Our calling is a heavenly calling, our inheritance is a heavenly inheritance, and our citizenship is in heaven.
But if we believers in the Lord Jesus lay up treasures on earth, than our hearts will be on earth.
Laying up treasures in heaven will draw the heart heavenward. It brings along with it, even in this life, precious spiritual blessings as a reward of obedience to the commandment of our Lord.
Taken from the book The Autobiography of George Muller
George Muller 1805-1898