They tried to hide. We too have a tendency to hide from God's gaze when we have been unfaithful. Jesus' teaching in Matthew points us to God's grace. As believers, God's grace in us has found a home when we extend that grace to others. This question from Micah challenges us to consider our actions but more importantly our hearts.
Religious routines are empty.
Honestly giving ourselves over to God is what our faith is about. The question calls us to responsibility to our actions. While the question involves our brother, it is ultimately about us as individuals. However, with great wisdom, the Scripture reminds that every-thing we do as an individual has an effect on others. Being obedient to God find expression in how we treat those around us.