The words tithing and offering get used interchangeably, but is there a difference between them? Pastor Mike answers the question about tithing and offering from the Bible.

The words tithing and offering get used interchangeably, but is there a difference between them? Pastor Mike answers the question about tithing and offering from the Bible.
Pastor Mike,
My question is about Cain and Able, why was Cain’s offering not pleasing in God’s eyes compared to his brother Able?