Not rendering evil for evil, or railing for railing: but contrariwise blessing; knowing that ye are thereunto called, that ye should inherit a blessing.
Evil - in deed.
Railing - in word.
Blessing - your revilers х eulogountes (G2127), participle, not a noun].
Knowing that. 'Aleph (') A B C, Vulgate, read merely, ' because.'
Are, х ekleetheete (G2564)] - 'were called.'
Inherit a blessing - not only passive, but active; receiving blessing from God by faith, and in turn blessing others from love (Gerhard in Alford). 'It is not in order to inherit a blessing that we must bless, but because our portion is blessings.' No railing can harm you (1 Peter 3:13). Imitate God who blesses you. The first-fruits of His blessing for eternity are enjoyed by the righteous even now (1 Peter 3:10) (Bengel).