"You are a chosen race, a royal priesthood, a holy nation, a people he claims for his own, to proclaim his glorious works" (1 Pet 2:9). These words of the Apostle Peter do not simply remind us of the dignity which is ours by God’s grace; they also challenge us to an ever greater fidelity to the glorious inheritance which we have received in Christ (cf. Eph 1:18). They challenge us to examine our consciences, to purify our hearts, to renew our baptismal commitment to reject Satan and all his empty promises. They challenge us to be a people of joy, heralds of the unfailing hope (cf. Rom 5:5) born of faith in God’s word, and trust in his promises.

(Benedict XVI, Homily, Mass at Yankee's Stadium, New York, 20 April 2008)