Seeing you have purified your souls in your obedience to the truth through the Spirit in sincere brotherly affection, love one another from the heart fervently:
See that ye love one another with a pure heart fervently - Compare the Hebrews 13:1 note; John 13:34-35 notes; Ephesians 5:2 note. The phrase “with a pure heart fervently,” means: