In the 4th installment of our War Against the Darkness series, we encounter 2 family trees in 1 John 3 - the children of God and the children of the devil. These family trees begin to develop in Genesis 3-4. We trace the development of humans who become part of the family of Satan and how this plays a role in the mission of Jesus.
The language of offering is all over the New Testament - applied to financial contributions, converts in mission work, bringing worship to the throne of God, even our bodies being a living sacrifice in service to others. But to understand the significance of the Quality of an offering, we need a passage like Malachi 1 to shake us up and open our eyes to how God sees anything which falls short of our best.