Ambrosiaster : If we are living well, we are always being filled with the Holy Spirit so as to confess and extol the gift of God. The Holy Spirit loves this way of life. This is especially expressed in songs, that praise may be sung to God by every tongue. If the Spirit is dwelling within someone, he is always meditating on the Spirit. It is not only his lips that burst forth but his heart. — EPISTLE TO THE Ephesians 5.19 Clement of Alexandria : For the apostle adds again, "Teaching and admonishing one another in all wisdom, in psalms, and hymns, and spiritual songs, singing with grace in your heart to God." And again, "Whatsoever ye do in word or deed, do all in the name of the Lord Jesus, giving thanks to God and His Father." This is our thankful revelry. And even if you wish to sing and play to the harp or lyre, there is no blame. Thou shalt imitate the righteous Hebrew king in his thanksgiving to God. "Rejoice in the Lord, ye righteous; praise is comely to the upright," says the prophecy. "Confess to the Lord on the harp; play to Him on the psaltery of ten strings. Sing to Him a new song." And does not the ten-stringed psaltery indicate the Word Jesus, who is manifested by the element of the decad? And as it is befitting, before partaking of food, that we should bless the Creator of all; so also in drinking it is suitable to praise Him on partaking of His creatures. For the psalm is a melodious and sober blessing. The apostle calls the psalm "a spiritual song." — The Instructor Book 2 Jerome : Our hymns declare the strength and majesty of God. They express gratitude for his benefits and his deeds. Our psalms convey this gratitude also, since the word Alleluia is either prefaced or appended to them. Our psalms properly belong to the domain of ethics, teaching us what is to be done and avoided. The domain of the psalms is the body as an instrument of grace. But the domain of the spiritual canticles is the mind. As we sing spiritual canticles we hear discourses on things above, on the harmony of the world, on the subtly ordered concord of all creatures. These spiritual songs help us express our meaning more plainly for the sake of simple folk. It is more with the mind than with the voice that we sing, offer psalms and praise God. — Commentary on Ephesians 5:19 John Chrysostom : What is meant by "with your hearts to the Lord"? It means, with close attention and understanding. For they who do not attend closely, merely sing, uttering the words, whilst their heart is roaming elsewhere. — Homily on Ephesians 19 Tertullian : The command, to "sing to the Lord with psalms and hymns," comes suitably from him who knew that those who "drank wine with drums and psalteries" were blamed by God. — Against Marcion Book V Tertullian : And will she not hence recognise a prejudgment of her own damnation, in that she tends them whom (formerly) she was expecting to judge? whose hand will she yearn after? of whose cup will she partake? What will her husband sing to her, or she to her husband? From the tavern, I suppose, she who sups upon God will hear somewhat! From hell what mention of God (arises)? what invocation of Christ? Where are the fosterings of faith by the interspersion of the Scriptures (in conversation)? Where the Spirit? where refreshment? where the divine benediction? All things are strange, all inimical, all condemned; aimed by the Evil One for the attrition of salvation! — To His Wife Book II Tertullian : Alms (are given) without (danger of ensuing) torment; sacrifices (attended) without scruple; daily diligence (discharged) without impediment: (there is) no stealthy signing, no trembling greeting, no mute benediction. Between the two echo psalms and hymns; and they mutually challenge each other which shall better chant to their Lord. — To His Wife Book II