Micah 6:8 (NIV) He has showed you, O man, what is good. And what does the LORD require of you? To act justly and to love mercy and to walk humbly with your God.
Matthew 7:12 (NIV) So in everything, do to others what you would have them do to you, for this sums up the Law and the Prophets.
Matthew 22:37-40 (NIV) 37Jesus replied: “‘Love the Lord your God with all your heart and with all your soul and with all your mind.’ 38This is the first and greatest commandment. 39And the second is like it: ‘Love your neighbor as yourself.' 40All the Law and the Prophets hang on these two [doors] commandments."
I John 4:20-21 (NIV) 20If anyone says, "I love God," yet hates his brother, he is a liar. For anyone who does not love his brother, whom he has seen, cannot love God, whom he has not seen. 21And he has given us this command: Whoever loves God must also love his brother.
Acts 2:41-42 (NIV) 41Those who accepted his message were baptized, and about three thousand were added to their number that day. 42They devoted themselves to the apostles' teaching and to the fellowship, to the breaking of bread and to prayer.