In 2010 Pope Benedict spoke on Saint Anthony that after re-reading earlier today, I can only recommend it to you again. It is essential reading.
The man who is filled with the Holy Spirit speaks in different languages. These different languages are different ways of witnessing to Christ, such as humility, poverty, patience and obedience; we speak in those languages when we reveal in ourselves these virtues to others. Actions speak louder than words; let your words teach and your actions speak. We are full of words but empty of actions, and therefore are cursed by the Lord, since he himself cursed the fig tree when he found no fruit but only leaves. Gregory says: “A law is laid upon the preacher to practice what he preaches.” It is useless for a man to flaunt his knowledge of the law if he undermines its teaching by his actions.
But the apostles “spoke as the Spirit gave them the gift of speech.” Happy the man whose words issue from the Holy Spirit and not from himself! […]
We should speak, then, as the Holy Spirit gives us the gift of speech. Our humble and sincere request to the Spirit for ourselves should be that we may bring the day of Pentecost to fulfillment, insofar as he infuses us with his grace, by using our bodily senses in a perfect manner and by keeping the commandments. Likewise we shall request that we may be filled with a keen sense of sorrow and with fiery tongues for confessing the faith, so that our deserved reward may be to stand in the blazing splendor of the saints and to look upon the triune God.