How should believers use their Christian liberty according to Galatians 5:13?

Les explains that Christian liberty means believers are not mandated in matters such as how much they give; one may give 30, 40, or 50 percent, while another may give considerably less, and no one is mandated. But that liberty must not become an occasion to the flesh, as if salvation permits doing whatever one wants. He says most true believers know better, while a pseudo salvation may take that approach. Returning to Galatians 5:13, Les reads it as: do not use liberty or freedom for an occasion to the flesh, but by love serve—literally be a bond slave for—one another. Paul wrote to Galatian believers in various congregations, so this service applies especially among believers with believers; they were to be like servants through love one to another. Les also links this to Biblical agape love, referencing Jesus' question to Peter, “Lovest thou me.”