John Calvin says, “All the precepts [of the Mosaic law]…have a reference to [the Golden Rule].” Even the Old Testament laws that deal more directly with God teach us to love our neighbor. The law against idolatry, for example, enjoins us to love others. Clearly, it is not loving to lead others into false worship and death through our service to idols. As you study a particular passage of Scripture, ask yourself how it shows you to put others ahead of yourself.
For further study:
The Bible in a year: