"You all know in what way the community of believers has been wounded in recent times by the attacks of evil, by the penetration of sin in the interior, in fact in the heart of the Church. Do not take this as a pretext to flee from God's presence; you yourselves are the Body of Christ, the Church! Carry intact the fire of your love in this Church every time that men have obscured her face. "Never flag in zeal, be aglow with the Spirit, serve the Lord" (Romans 12:11).
When Israel was in the darkest point of its history, God called to the rescue no great and esteemed persons, but a youth called Jeremiah; Jeremiah felt invested with too great a mission: "Ah, Lord God! Behold, I do not know how to speak, for I am only a youth!" (Jeremiah 1:6). But God did not let himself be misled: "Do not say, 'I am only a youth'; for to all to whom I send you you shall go, and whatever I command you you shall speak" (Jeremiah 1:7)." --From the introduction of the new Catechism for Youth