The best definition of Brotherly Love that comes to my mind is from St. John the Apostle, the beloved disciple of Jesus Christ, who said:
"He who says that he is in the light, and has hate in his heart for his brother, is still in the dark."
"He who has love for his brother is in the light, and there is no cause of error in him."
(Ist Epistle of John, Ch. 2:9 & 10)
"No man has ever seen God: if we have love for one another, God is in us and his love is made complete in us."
(Ist Epistle of John, Ch.4:12)
Having come in our thoughts when dealing with Brotherly Love, to God dealing with Brotherly Love, to God Himself, I do not think that I should say any more about it.
But what about Relief ?
Regarding this also certain verses from the Volume of the Sacred Law come to my mind: St. James writes in his Epistle, Chapter 2, Verses 15 and 16 as follows:-
"If a brother or a sister is without clothing and in need of food,
"And one of you says to there, Go in peace, be warm and full of food; but you do not give them the things of which their bodies have need, what profit is there in this ?"
Also in I John, Ch. 3:17 it is said:
"But if a man has this world's goods, and sees that his brother is in need, and keeps his heart shut against his brother, how is it possible for the love of God to be in him?"
Thus in essence Relief boils down to this, that we share what we have got with those who do not have but need them so that there is fellow-feeling and cheer and contentment all around. Happy have we met; happy have we been! ("THE GRAND PRINCIPLES OF FREEMASONRY," By W. Bro. P. A. Krishnaswami, M.A., P.A.G.D.C.)