The movie Pay It Forward introduced the innovative idea of a boy named Trevor McKinney. When Trevor’s social studies teacher assigned students to conjure up something to change the world and put it into action, Trevor turned around "paying a favor back" to "paying a favor forward." Trevor’s efforts ended up transforming the lives of those around him. The movie is based on the premise that, more often than not, unless we purpose to live differently, our behaviors are often self-serving. It takes thought and intentionality and effort to love others the way we love ourselves. This is exactly the way God has invited us to live.
When God’s people, delivered out of bondage in Egypt, were still sojourning in the wilderness, God gave them an extensive set of laws so that they would know what it was to live in freedom. Anticipating natural human resistance, God preempted the expected stubbornness by adding an explanation to many of them. Command after command detailed in Deuteronomy concludes, "Remember that you were slaves in Egypt and the Lord your God redeemed you from there. That is why I command you to do this" (see v. 22). These commandments ranged from everything from how to harvest one’s fields, as in our reading today, to whom to invite to your house for a festival celebration. Specifically, God was asking His people to remember and include foreigners and orphans and widows.
Looking backward, God was asking His people to pay it forward. Yes, caring for these ones who God loves was kind of like "payback" for God’s mighty Red Sea deliverance out of slavery. It was also the new social pattern, by which the world would be blessed, that God was establishing through Israel.