MEASURE OF REWARD
What you spend on self and your nuclear family that is reasonable in relation to, and commensurate with, your material circumstance and godly standard of life is part of your service to God which will magnify your eternal heritage in heaven. That is why if you have the means but fail to provide for your own immediate family you have denied the faith being an infidel.
What you spend frivolously, extravagantly and recklessly on self and family ends with the using. Your reward from the spending appertains to this life only and does not add to your eternal heritage. That is not a wise thing to do for those who expect to dwell with God in heaven.
Jesus said: “Sell what you have and give alms; provide yourselves money bags which do not grow old, a treasure in the heavens that does not fail, where no thief approaches nor moth destroys. For where your treasure is, there your heart will be also.” (Lk 12:33-34).
Philanthropy is good; but benevolence that does not draw sinners to Christ attracts no reward in heaven. What you spend according to what is appointed of you in furtherance of the great Commission will determine the measure of your reward at the Judgment Seat of Christ.