Deuteronomy 14 - Moses focuses on three points: The Israelites are not to practice the pagan rituals of mourning; they are to adhere to God-given dietary rules; and they are to remember the importance of tithing everything they grow or earn. Living by God's standards allows God's people to enjoy God's blessings.
Deuteronomy 15 - Though Moses speaks of the Israelites releasing any Hebrew slave on the seventh year, the whole chapter speaks of the care the Jewish people are to have for those who are in poverty. The Israelite was to treat his poor neighbors with compassion, mercy, and patience. They were to remember they were all slaves in Egypt. We are to remember that God has always shown love and compassion for us.
Deuteronomy 16 - Moses went over the yearly feasts and festivals the Jews were to observe. He also instructed them to appoint judges who would administer justice to everyone in need of their help. They were also warned against the use of any image to enhance their worship. We should remember that "God is Spirit and they who worship Him must worship in spirit and in truth."