"Mary’s openness to God is an essential element in God’s plan for our salvation. By her openness to bear the Son of God, she becomes a primary instrument in our salvation. Now, we are also invited to be instruments of God’s plan for our salvation and the salvation of others. We do so first of all by responding to God’s offer of mercy personally and striving to become holy persons. We do so secondly by being instruments of grace and mercy as we help others to become holy. An image I often use to convey this is that of an electrical charge flowing through a copper wire. The wire cannot store up the electrical charge, but only allow it to pass through. If it cannot pass through the wire, it never enters into it. Mercy acts very much like this. If mercy does not flow through us, it never actually enters into us. Paradoxically, it is when we allow it to pass through us that we grow in grace."