<p>3:35 <em>For whoever shall do the will of God, the same is my brother and sister and mother</em>- Another allusion back to the crunch line of the Sermon on the Mount, that the true community would be comprised of those who did the will of the Father in Heaven. The Lord spoke of Himself as 'doing the will' of the Father, supremely in His death on the cross. Heb. 10:7,9 speaks of the Son 'doing the will' of God in dying on the cross, and the passage then goes on to appeal to us likewise to do that same will (Heb. 10:36). And it is God who will work in us through the Spirit to empower us to do that will- if we ourselves so wish (Heb. 13:21). The very fact the Lord calls us brethren here is seen by the Hebrew writer as proof of Christ's humanity (= Heb. 2:11).</p>