The Mellifluous Doctor

If you look back on your own experience, is it not in that victory by which your faith overcomes the world, in “your exit from the horrible pit and out of the slough of the marsh,” that you yourselves sing a new song to the Lord for all the marvels he has performed? Again, when he purposed to “settle your feet on a rock and to direct your steps,” then too, I feel certain, a new song was sounding on your lips, a song to our God for his gracious renewal of your life. 

When you repented he not only forgave your sins but even promised rewards, so that rejoicing in the hope of benefits to come, you sing of the Lord’s ways: how great is the glory of the Lord! And when, as happens, texts of Scripture hitherto dark and impenetrable at last become bright with meaning for you, then, in gratitude for this nurturing bread of heaven you must charm the ears of God with a voice of exaltation and praise, a festal song. In the daily trials and combats arising from the flesh, the world and the devil, that are never wanting to those who live devout lives in Christ, you learn by what you experience that man’s life on earth is a ceaseless warfare, and are impelled to repeat your songs day after day for every victory won. As often as temptation is overcome, an immoral habit brought under control, an impending danger shunned, the trap of the seducer detected, when a passion long indulged is finally and perfectly allayed, or a virtue persistently desired and repeatedly sought is ultimately obtained by God's gift; so often, in the words of the prophet, let thanksgiving and joy resound. For every benefit conferred, God is to be praised in his gifts. Otherwise when the time of judgment comes, that man will be punished as an ingrate who cannot say to God: “Your statutes were my song in the land of exile.”

Saint Bernard of Clairvaux
First Sermon on the Song of Songs