In bringing many sons and daughters to glory, it was fitting that God, for whom and through whom everything exists, should make the pioneer of their salvation perfect through what he suffered.
Both the one who makes people holy and those who are made holy are of the same family. So Jesus is not ashamed to call them brothers and sisters.
He says, “I will declare your name to my brothers and sisters; in the assembly I will sing your praises.”
And again, “I will put my trust in him.”And again he says, “Here am I, and the children God has given me.”