Thematic Bible: Summed up by Christ

and one of them, an expert in the Law, to test him, asked, "Master, what command is greatest in the Law?" And he said to him, " 'You must love the Lord your God with your whole heart, your whole soul, and your whole mind.' read more.
That is the great, first command. There is a second like it: 'You must love your neighbor as you do yourself.' These two commands sum up the whole of the Law and the Prophets."