The Lord does not prosper a person so that they can have bigger houses, fancier cars, and lavish life-styles. His purpose is that He establishes His covenant and brings provision to the work of spreading the Gospel.
He does reward good stewards with luxurious things to display His goodness.
The liberal soul shall be made fat: and he that watereth shall be watered also himself. Proverbs 11:25 KJV
Give, and it shall be given unto you; good measure, pressed down, and shaken together, and running over, shall men give into your bosom. For with the same measure that ye mete withal it shall be measured to you again. Luke 6:38 KJV