Malachi 3:7-8 KJV

7 Even from the days of your fathers ye are gone away from mine ordinances, and have not kept them. Return unto me, and I will return unto you, saith the LORD of hosts. But ye said , Wherein shall we return ?
8 Will a man rob God? Yet ye have robbed me. But ye say , Wherein have we robbed thee? In tithes and offerings.