Pope Benedict XVI tailored his message before the Sunday Angelus around the "divine call" of the Lord presented in today's Liturgy. The Holy Father taught that through the examples of Isaiah, Peter and Paul man can realize his "call," regardless of the limitations.

First, said the Pope, there is Isaiah, who responds "Here I am Lord, send me!" after being fearful and feeling undeserving before the Lord. Then, there is Simon Peter and the other disciples who cast their nets at the bidding of Jesus and find fish where there were none. When the "overabundant catch" is landed, Simon Peter tells the Lord, "Depart from me, Lord, for I am a sinful man," but the Lord invites him and the others to leave everything and follow him as "fishers of men."

Paul is also struck by his unworthiness to be called an apostle because of his history of Christian persecution, but he recognizes the changes that have taken place in him due to the grace of God, the Holy Father pointed out. With the grace of God, St. Paul dedicated himself to preaching the Gospel, despite his limitations, the Pope said.

"In these three experiences we see how the true encounter with God brings man to recognize his own poverty and inadequacy, his own limits and sin. "But," said Pope Benedict, "regardless of the fragility, the Lord, rich in mercy and forgiveness, transforms the life of man and he calls him to follow him."

The humilty of these three witnesses in Sunday's Liturgy "invites all who have received the gift of the divine vocation to not concentrate on their own limits, but to keep a fixed gaze on the Lord and on his surprising mercy, to convert their hearts and continue, with joy, to 'give up everything' for Him," Benedict XVI taught.

The Lord sees the heart of man, and makes "intrepid apostles and announcers of salvation" of weak and poor, but faithful, men.

In conclusion, noting the occasion of the Year for Priests, the Holy Father prayed to "the Patron of Masses" to send workers that know how to respond to the Lord's invitation to follow him with generosity, "not trusting in their own strength, opening themselves to the action of His grace."

"In particular," he finished, "I invite all priests to revive their generous availability to respond each day to the call of the Lord with the same humility and faith of Isaiah, Peter and Paul."