Deuteronomy 6:1-9 New Revised Standard Version, Anglicised (NRSVA)
The Great Commandment
6 Now this is the commandment—the statutes and the ordinances—that the Lord your God charged me to teach you to observe in the land that you are about to cross into and occupy, 2 so that you and your children and your children’s children may fear the Lord your God all the days of your life, and keep all his decrees and his commandments that I am commanding you, so that your days may be long. 3 Hear therefore, O Israel, and observe them diligently, so that it may go well with you, and so that you may multiply greatly in a land flowing with milk and honey, as the Lord, the God of your ancestors, has promised you.
4 Hear, O Israel: The Lord is our God, the Lord alone.[a] 5 You shall love the Lord your God with all your heart, and with all your soul, and with all your might. 6 Keep these words that I am commanding you today in your heart. 7 Recite them to your children and talk about them when you are at home and when you are away, when you lie down and when you rise. 8 Bind them as a sign on your hand, fix them as an emblem[b] on your forehead, 9 and write them on the doorposts of your house and on your gates.
Matthew 5:17-20 New Revised Standard Version, Anglicised (NRSVA)
The Law and the Prophets
17 ‘Do not think that I have come to abolish the law or the prophets; I have come not to abolish but to fulfil. 18 For truly I tell you, until heaven and earth pass away, not one letter,[a] not one stroke of a letter, will pass from the law until all is accomplished. 19 Therefore, whoever breaks[b] one of the least of these commandments, and teaches others to do the same, will be called least in the kingdom of heaven; but whoever does them and teaches them will be called great in the kingdom of heaven. 20 For I tell you, unless your righteousness exceeds that of the scribes and Pharisees, you will never enter the kingdom of heaven.