Mark 12:31

31[The] secondδευτέραthisαὕτη·You shall loveἈγαπήσειςtheτὸνneighborπλησίονof youσουasὡςyourselfσεαυτόν.Greaterμείζωνthan theseτούτωνanotherἄλληcommandmentἐντολὴnotοὐκthere isἔστιν.

The second [is] this: ‘You shall love your neighbor as yourself.’ There is not another commandment greater than these.”