so that we may not fall short in our utterances; not that He has felt the need of such praises, but because He foresaw that the practice was useful for us. All His words, all His advice was given so that we should be unwilling to go astray. Finally He took on the very nature of humanity, so that in its frailty it should not perish. But let us take thought whether having received such bountiful gifts we should sin against so great a grace.
I. Alleluia. Once again divine authority resounds in our ears, and Alleluia knocks at the doors of our hearts, bidding us not to absorb ourselves vainly in empty thoughts, since it does not befit a soldier of Christ to be on furlough. The tongue too has its fruits, for a most abundant harvest is gathered if it is roused to the Lord's praise by an unsullied mind. The tongue is a spiritual member when it serves the Creator; it also commends the soul when it speaks the truth. So let us fill the air with the sweetest sounds, for this music of salvation not only charms mens' ears but also delights the understanding of angels.
The prophet is eager that the Lord's praises be sung wholeheartedly. Initially he says that we must put no trust whatever in men, to prevent our making lukewarm entreaty of the Lord through belief that some other can grant our request. Secondly, he proclaims that all our hope must be placed in the almighty Lord. Since He is our Lord, a most beautiful definition of Him is presented from His deeds, so that the Gentiles may be convinced by such reiterated reasoning, and may abandon their errors with faithful devotion.
2. Praise the Lord, O my soul. To ensure that his will does not idly devote itself to earthly desires, and that the impetus of his mind should