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." (Hebrews 13:5)
Preachers who buy expensive furnitures, build big mansions, and travel using their private jets using donations or gifts from the people only show their excessiveness (lack of contentment) and their love for money. They probably have more in their bank accounts. It really shows their insecurities. They don't depend on God who says "I will never leave you nor forsake you." These preachers are in a hurry to get more money from the people before his/her popularity and reputation is over. It's simply because they are preaching the false gospel which is grounded on nothing but the love for money and deception. They count each day as an opportunity to advertise and to accept more cash.