Then the Lord said to him, "Now you Pharisees make the outside of the cup and dish clean, but your inward part is full of greed and wickedness." (Luke 11:39)

And He [Jesus] said to them, "Take heed and beware of covetousness, for one's life does not consist in the abundance of the things he possesses." (Luke 12:15)

For the love of money is a root of all kinds of evil, for which some have strayed from the faith in their greediness, and pierced themselves through with many sorrows. (1 Tim 6:10)

Put to death ⋯ covetousness, which is idolatry. (Col 3:5)

Church leaders must be ⋯ not covetous [not a lover of money]; (1 Tim 3:3)

Deacons must be⋯ not greedy for money, (1 Tim 3:8)

Summary

Keep your life free from love of money, and be content with what you have, for he has said, "I will never leave you nor forsake you." (Heb 13:5)

True godliness, in walking with God, having a good conscience, gives contentment, no matter what earthly circumstances are. A believer who seeks the things above should no longer have a desire for earthly things, knowing that we brought nothing into the world nor carry anything out. Yet, the example provided by Jesus of the covetous ruler is clearly seen today in our leaders and in the rank and file of churches. Riches, and honours, and rank, and pleasure, are the chief objects for most people. And yet the Bible declares these as "vanity".
If the eternal things, that promised glory, are ever real before the soul, then each will be content with having the necessary things, food and clothes. Money itself is not evil, but the love of it is a fearful thing. It corrupts the heart absolutely. Examples of this evil are all about us in the professing church, and "lovers of money" and "lovers of pleasure more than lovers of God" are constantly increasing. Surely these heap treasure of wood, hay and stubble together for the last days, which along with the dross (Proverbs 25:4), will be burnt (Mal 4:1; 1 Cor 3:12, 13). Weeping and wailing will follow (James 5:3).

Remarks from A C Gaebelein & J C Ryle