The Greatest Commandment

Matthew 22:34-40

but when the P'rushim learned that he had silenced the Tz'dukim, they got together,

and one of them who was a Torah expert asked a sh'eilah to trap him:

"Rabbi, which of the mitzvot in the Torah is the most important?"

He told him, "`You are to love ADONAI your God with all your heart and with all your soul and with all your strength.'

This is the greatest and most important mitzvah.

And a second is similar to it, `You are to love your neighbor as yourself.'

All of the Torah and the Prophets are dependent on these two mitzvot."