What does 'lay up for yourselves treasures in heaven' mean?

In Matthew 6:19-21, Jesus contrasts earthly treasures, which are subject to decay and theft, with heavenly treasures that are eternal. 'Laying up treasures in heaven' involves investing in spiritual pursuits: growing in grace, building relationships in the body of Christ, and spreading the Gospel. This perspective shifts our focus from what we can accumulate here on earth to what will matter in eternity. The heart follows where our treasure is, thus encouraging us to align our values with those of God's kingdom rather than getting caught up in the fleeting desires of this world.