1 Peter 1:22-23

Seeing ye have purified your souls in obeying the truth through the Spirit unto unfeignedlove of the brethren, see that ye love one another with a pure heart fervently: being born again, not of corruptible seed, but of incorruptible, by the word of God, which liveth and abideth for ever.

*Unfeigned stresses spontaneity and absence of pretense, not false or pretended.