Sincerity: should Characterize: Our Love to One Another
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Romans 12:9
Love must be sincere. Detest what is evil; cling to what is good.
1 Peter 1:22
Since you have purified your souls by obedience to the truth so that you have a genuine love for your brothers, love one another deeply, from a pure heart.
1 John 3:18
Little children, let us love not in word and speech, but in action and truth.