This thought sounds like it should be easy. But it seems anything but easy. I believe one of the reasons it is repeated so often is because of the difficulty of living this command out.
As you read the following scripture, it sounds as if John is writing to a certain lady. I believe he is writing to the Church.
Yes indeed, even in the Church, perhaps we could say especially in the Church it seems hard to love one another.
I invite you to read the following verses.
To the chosen lady and her children, whom I love in the truth — and not I only, but also all who know the truth— 2 because of the truth, which lives in us and will be with us forever:
3 Grace, mercy, and peace from God the Father and from Jesus Christ, the Father’s Son, will be with us in truth and love.
4 It has given me great joy to find some of your children walking in the truth, just as the Father commanded us.
5 And now, dear lady, I am not writing you a new command but one we have had from the beginning. I ask that we love one another.
6 And this is love: that we walk in obedience to his commands. As you have heard from the beginning, his command is that you walk in love.
7 Many deceivers, who do not acknowledge Jesus Christ as coming in the flesh, have gone out into the world. Any such person is the deceiver and the antichrist.
8 Watch out that you do not lose what you have worked for, but that you may be rewarded fully.
9 Anyone who runs ahead and does not continue in the teaching of Christ does not have God; whoever continues in the teaching has both the Father and the Son.
10 If anyone comes to you and does not bring this teaching, do not take him into your house or welcome him.
11 Anyone who welcomes him shares in his wicked work.
We live in a time of hatred, it would seem many people hate one another. In this hostile environment, the believer is asked to model another way of living.
I feel it is safe to say we cannot model loving one another without the help of the Holy Spirit Who indwells the believer.
May you and I, may all who are believers love one another.
Be blessed, be a blessing.