我们因为爱弟兄，就晓得是已经出死入生了。

We know that we have passed from death unto life, because we love the brethren.

youdao

爱弟兄的就是住在光明中,在他并没有绊跌的缘由

Whoever loves a brother lives in the light and in such a person there is no cause for stumbling.

youdao

爱神的，也当爱弟兄，这是我们从神所受的命令。

Dear friends, since God so loved us, we also ought to love one another.

youdao