Matthew 12:50
For whosoever shall do the will of my Father which is in heaven, the same is my brother, and sister, and mother.
For whosoever shall do the will of my Father,.... This is not to be understood of a perfect obedience to the will of God, revealed in his righteous law; for since this cannot be performed by any mere man, no one could be in such a spiritual relation to Christ: but of the obedience of faith to the will of God, revealed in the Gospel; which is to believe in Christ, and have everlasting life; see John 6:40. This is the will of Christ's Father,
which is in heaven, and which is good news from heaven, to sinners on earth; and which Christ came down from heaven to do, and to declare to the children of men: such as "hear the word of God and do it", as Luke says, Luke 8:21 that is, hear the Gospel, understand and believe it, and become obedient to the faith of it; these are in this near manner related to Christ, evidentially and openly, as well as those who were now present:
the same is my brother, and sister, and mother; as dear to me, as such are to those, to whom they stood thus related in the flesh: and these natural relations serve to convey some ideas of that relation, union, nearness, and communion, there are between Christ and his people; all these relative characters may be observed in the book of Solomon's Song, to which our Lord may be reasonably thought to have respect; see Song of Solomon 3:11.