The two men who go to the Temple to pray contrast in character, belief, and self-examination. Martin Collins shows that, although this parable involves prayer, it is not as much about how to pray as it is about how to be justified before God.
Countering the Protestant red-herring argument, "You cannot earn salvation by works," John Ritenbaugh stresses that works certainly are not "done away" but that God expects works from all those He has called. We show our faithfulness and loyalty to God by our works or conduct - what we produce by what we have been given. The works demanded of us consist of continual striving to be faithful to our covenant relationship with God by keeping His commandments (not the traditions of men). As we strive to live by the Spirit instead of by the flesh (Romans 8:5) we will produce the kind of fruit pleasing to God. God forces a converted person to choose between two opposing forces (Romans 8:13), providing us His Spirit as a tool to overcome.
John Ritenbaugh, focusing upon the seed analogy of Jesus in John 12:24, emphasizes that sacrifice is absolutely necessary (the seed must give up its life) in order for quality fruit to be produced. Using this seed planting analogy, Jesus teaches that, as a seed must be planted, dying to itself in order to bear fruit, we similarly must sacrifice our lives- submitting our wills unconditionally to God's will in order to bear abundant fruit, attaining the abundant life we deeply crave. Conversely, if we try to placate the natural carnal lusts, we will not bear good fruit. After we die to sin in the waters of baptism, we no longer dedicate ourselves to satisfying our carnal drives, but instead to submit to God, who engineers the process of our spiritual growth into a new spiritual creation, children of light, reflecting the characteristics of our spiritual Parent. Keeping God's Commandments leads to spiritual insight and light, but breaking them leads to spiritual blindness and darkness. There is no neutrality in following God's Word. John 13:1-17 provides an unusual insight into the very mind of God, exemplified as a serving "footwashing" attitude, demonstrating servant leadership toward His creation, an attitude and behavior we are obligated to emulate. The essence of love is sacrifice.