In this first reading of the day, Paul gives us a lovely familiar insight into Jesus. In a few sentences Paul sums up all that Jesus is and who we are. By taking flesh and blood Jesus totally identifies himself with us and by being tempted in this life in the same way as we are, Jesus knows all the difficulties that we face.
Also, since we are of one flesh and blood then we are all connected in the same way as we know there is a connection between us and any human being, regardless of race or colour, just by the fact that they are human. Jesus is included in this connection.
On the reverse side, we are included in who Jesus is: by virtue of his Godhead we are all elevated to the level of children of God. This is something that our human nature could never attain too and is something alien to our human nature: it is a free gift from God.
But there is one other very important point that Paul brings out: by dying and rising again, Jesus does away with the power of death and we no longer have any reason to fear death. Up to now, says Paul, humanity has lived in fear of death, but the coming of Jesus once and for all overcomes that fear. We are freed from living in dread of death being the end of everything.
In a culture that is becoming obsessed with death and killing, we are fortunate to know that death is not the end, just a change to a new address!