Albert Barnes Commentary 2 Peter 1:7

"and in [your] godliness brotherly kindness; and in [your] brotherly kindness love." — 2 Peter 1:7 (ASV)

And to godliness brotherly kindness. Love to Christians as such. See Barnes "John 13:34"; See Barnes "Hebrews 13:1".

And to brotherly kindness charity. Love to all mankind. There is to be a peculiar affection for Christians as of the same family; there is to be a true and warm love, however, for all the race. See Barnes "1 Corinthians 13:1 and following."