But Whether Keenly Contending, that we be not Overcome...
32. But whether keenly contending, that we be not overcome, or overcoming divers times, or even with unhoped and unlooked for ease, let us give the glory unto Him Who giveth continence unto us. Let us remember that a certain just man said, "I shall never be moved:" and that it was showed him how rashly he had said this, attributing as though to his own strength, what was given to him from above. But this we have learnt from his own confession: for soon after he added, "Lord, in Thy will Thou hast …
St. Augustine—On Continence

Period ii. The Church from the Permanent Division of the Empire Until the Collapse of the Western Empire and the First Schism Between the East and the West, or Until About A. D. 500
In the second period of the history of the Church under the Christian Empire, the Church, although existing in two divisions of the Empire and experiencing very different political fortunes, may still be regarded as forming a whole. The theological controversies distracting the Church, although different in the two halves of the Graeco-Roman world, were felt to some extent in both divisions of the Empire and not merely in the one in which they were principally fought out; and in the condemnation …
Joseph Cullen Ayer Jr., Ph.D.—A Source Book for Ancient Church History

Rules to be Observed in Singing of Psalms.
1. Beware of singing divine psalms for an ordinary recreation, as do men of impure spirits, who sing holy psalms intermingled with profane ballads: They are God's word: take them not in thy mouth in vain. 2. Remember to sing David's psalms with David's spirit (Matt. xxii. 43.) 3. Practise St. Paul's rule--"I will sing with the spirit, but I will sing with the understanding also." (1 Cor. xiv. 15.) 4. As you sing uncover your heads (1 Cor. xi. 4), and behave yourselves in comely reverence as in the …
Lewis Bayly—The Practice of Piety