Mark 12:28-31

Then one of the scribes came, and having heard them reasoning together, perceiving that He had answered them well, asked Him, “Which is the first commandment of all?”
Jesus answered him, “The first of all the commandments is: ‘Hear, O Israel, the LORD our God, the LORD is one.
And you shall love the LORD your God with all your heart, with all your soul, with all your mind, and with all your strength.’
This is the first commandment.
And the second, like it, is this: ‘You shall love your neighbor as yourself.’ There is no other commandment greater than these.”

1 Peter 3:8-9

Finally, all of you be of one mind, having compassion for one another; love as brothers, be tenderhearted, be courteous;
not returning evil for evil or reviling for reviling, but on the contrary blessing, knowing that you were called to this, that you may inherit a blessing.

1 Peter 1:13-16

Therefore gird up the loins of your mind, be sober, and rest your hope fully upon the grace that is to be brought to you at the revelation of Jesus Christ;
as obedient children, not conforming yourselves to the former lusts, as in your ignorance;
but as He who called you is holy, you also be holy in all your conduct,
because it is written, “Be holy, for I am holy”.