'Brotherly' in the Bible

Thus said Jehovah: For three transgressions of Tyre, And for four, I do not reverse it, Because of their delivering up a complete captivity to Edom, And they remembered not the brotherly covenant,

And concerning the brotherly love, ye have no need of my writing to you, for ye yourselves are God-taught to love one another,

Let brotherly love remain;

Your souls having purified in the obedience of the truth through the Spirit to brotherly love unfeigned, out of a pure heart one another love ye earnestly,

and in the piety the brotherly kindness, and in the brotherly kindness the love;