Covetousness from a Biblical perspective is a desire and/or effort to obtain, retain (save or hoard), or spend earthly money, wealth or possessions for personal use over and above our own present need when there is present spiritual or physical "need" that could be met with such treasure instead.
Jesus said do not "store up" treasure on earth ( creating an abundance for personal use now or in the future) but rather store up treasure in heaven ( spending now on meeting the present need of others).  Jesus defined "need" very carefully as food, clothing and perhaps shelter. Â
We absolutely do not like this definition.  It runs counter to everything we read or that is said in our culture and even in Christian counseling on money.   However, this definition of covetousness was the working definition for Jesus in His teaching and in His life and the life of His would be and actual followers,  especially in the Gospel of Luke.  Think of the rich young ruler, Zaccheus,  the man with many barns, the rich man dressed in purple, the woes of the Mount Olivet sermon, the fruits of repentance taught by John the Baptist, the teaching of John in 1 John 3 on true brotherly love.  Â
It's all very clear if we want to understand it. Â
The Holy Spirit has said that covetousness is as the sin of idolatry. Â
Do not store up treasures on earth is pretty clear.  Do store up treasures in heaven is equally clear. Do not can rightly be interpreted as "Do Not".  What is not clear is why we, ( including me), refuse to hear. Â
Maybe we could debate what all the teachings on "treasures on earth" do not mean.  Perhaps it is worthwhile, however, that we focus on what it does mean.
I realize this is probably the most unwanted topic for any of us to deal with. First, because as a Biblical subject it is old, tired and nagging. Second, it is a subject that has dramatic immediate impact on our lives that can't be easily shooed away. Finally, and more importantly, because it requires us to deal with sacrifice and while we all are seemingly willing to embrace involuntary personal suffering for Christ's sake (if it is forced on us), actually embracing voluntary sacrifice for His sake is so difficult.
Why is it important though? Because the idolater (covetous) shall not inherit the Kingdom of God.
