Do you love the brethren?

We know that we know Him, when we keep His commandments.
Now this is brought down more specifically. There are doubtless some, who would say…well I have kept his commands…well, do you love the brethren? Do you?
There is a progression of thought. The person who is saved, should keep God’s commands. And one of the first and foremost of them, is that…We are to love the brethren. This is of such value that John deals with this matter of loving the brethren about 3 different times.