This is today's entire Gospel reading at Mass from John 10:
Jesus said: "My sheep hear my voice; I know them, and they follow me. I give them eternal life, and they shall never perish. No one can take them out of my hand. My Father, who has given them to me, is greater than all, and no one can take them out of the Father's hand. The Father and I are one."
The recent Boston bombing has caused terrible deaths and injuries to the innocent. It just shows how fragile life can be in these days of great evil. Even though our physical life can get snuffed out, our eternal life in Christ is indestructible ~ just read the Gospel above to see how secure we can be! By seeking union with the Lord in this life, my security is being established.