This was the outline I used in our small group study, with eight non-Christian visitors present.

The Inexorable Principle of Sowing and Reaping
Galatians 6:6-10

1. Invest your money where it counts (6).
2. You might fool parents or authorities, but never God (7a).
3. Learn what the word “inexorable” means. That’s what the divine law of planting and reaping is (7).
4. Patience! The reward comes later (8-9).
5. Now is the time to plant: open your eyes to the opportunities to do good today (10).