In Matthew 6:19–21, Jesus urges storing up treasures in heaven rather than on earth. Paul reinforces this in Philippians 4:19, promising that God will meet all our needs according to His riches that are bestowed on us through faith in Christ Jesus. In conclusion, being wealthy is not a sin according to Scripture.

Leviticus 27:30  A tithe of everything from the land, whether grain from the soil or fruit from the trees, belongs to the Lord; it is holy to the Lord.

Matthew 16:26  What good will it be for someone to gain the whole world, yet forfeit their soul? Or what can anyone give in exchange for their soul?