Commenting on the First Reading from the Book of Jeremiah, the Pope stresses in his Homily that "God is always faithful, for he cannot deny himself" while the people do not listen to His word. Jeremiah therefore tells us the "many things that God has done to attract the hearts of the people," but, the Pope adds, the people remain unfaithful.

If the heart is hardened and closed, God’s mercy does not enter

"This unfaithfulness of God's people,”  warns the Pope,  is  “also ours.” It is “our own infidelity [which] hardens the heart, closes the heart!"

"It does not allow [us to hear] the voice of the Lord who, as a loving father, always asks us to open ourselves to His mercy and His love. In the Psalms, the Pope adds, we all pray  together: 'Hear now the voice of God. Do not harden your hearts! ' The Lord always speaks with us in this way, also with the tenderness of a father who says: 'Return to me with all your heart, for I am compassionate and merciful.’  But when the heart is hardened, you don’t understand this. God’s mercy can only be understood when you are able to open your heart to let it enter. "

Referring to the passage from Luke’s Gospel where Jesus is confronted by learned men who had studied the Scriptures, Pope Francis says they were "teachers of the law who knew theology, but they were very, very closed" . The crowd, however, "was amazed," and "had faith in Jesus!  Their hearts were open:  imperfect, sinful, but open hearts."

Ask forgiveness, do not judge others

But these theologians, adds the Pope, "had a closed attitude! They always sought an explanation so as not to understand the message of Jesus."  "They asked him for a sign from heaven.  Always closed!  It was Jesus who had to justify his actions."

"This is the story, the story of this failed fidelity. The story of closed hearts, of hearts that do not let in the mercy of God, which have forgotten the word forgiveness:  'Forgive me Lord!' - simply because they do not [see themselves as] sinners [but see themselves as] judges of others. A story lasting centuries.”  And Jesus, the Pope continues, explains this failed fidelity very clearly - to combat the discourse of such hypocrites:  ‘He who is not with me is against me.' “It’s clear! Or are you faithful, with your heart open to God who is faithful to you, or you are against Him: 'He who is not with me is against me!'"

Faithfulness to God begins with recognizing our sinfulness

But is there room here for middle ground, for "negotiations?"  asks the Pope.  The answer, he says, lies in confessing to being a sinner!  If you acknowledge that you are a sinner, “the heart opens and God’s mercy is allowed to enter and you begin to be faithful."

"We ask the Lord for the grace of fidelity.  And the first step on this path towards fidelity is to admit you are a sinner,” adds Pope Francis. “If you do not feel sinful, you have begun badly. We ask for grace so that our hearts do not harden - that they are open to God's mercy - and for the grace of faithfulness. And when we find ourselves unfaithful, for the grace to ask for forgiveness."