Matthew 22:36-39 NIV

36 “Teacher, which is the greatest commandment in the Law?”
37 Jesus replied: “ ‘Love the Lord your God with all your heart and with all your soul and with all your mind.’a

References for Matthew 22:37

38 This is the first and greatest commandment.
39 And the second is like it: ‘Love your neighbor as yourself.’b

References for Matthew 22:39