The Seventh Sunday after the Epiphany: Domine In Tua

Here's Giovanni Vianini's version of this Introit for the Seventh Sunday after Epiphany:



Here's the chant score from JoguesChant, with the English translation below:

O Lord, I have placed my trust in your merciful love; my heart has rejoiced in your salvation. I will sing unto the Lord who has dealt bountifully with me. How long will you forget me, O Lord? For ever? How long will you hide your countenance from me?

The text comes from Psalm 13 - first verse 6 and then verse 1.

Here's a version of the Introit in English, using Gregorian Tone 5 (but not the tune above). 

The collect for the day is one that is rarely heard:

O Lord, you have taught us that without love whatever we do is worth nothing: Send your Holy Spirit and pour into our hearts your greatest gift, which is love, the true bond of peace and of all virtue, without which whoever lives is accounted dead before you. Grant this for the sake of your only Son Jesus Christ, who lives and reigns with you and the Holy Spirit, one God, now and for ever. Amen.

Hatchett's Commentary says this about the collect:

This collect was composed for the 1549 Prayer Book for use on Quinquagesima, the Sunday next before Ash Wednesday, where it was associated with the Epistle, 1 Corinthians 13.  In the revised lectionary it reinforces the Gospel injunction in Years A and C:  "Love your enemies."

Since this is year A, we will have that Gospel reading, Matthew 5:38-48 (still part of the Sermon on the Mount):

Jesus said, "You have heard that it was said, `An eye for an eye and a tooth for a tooth.' But I say to you, Do not resist an evildoer. But if anyone strikes you on the right cheek, turn the other also; and if anyone wants to sue you and take your coat, give your cloak as well; and if anyone forces you to go one mile, go also the second mile. Give to everyone who begs from you, and do not refuse anyone who wants to borrow from you.

"You have heard that it was said, `You shall love your neighbor and hate your enemy.' But I say to you, Love your enemies and pray for those who persecute you, so that you may be children of your Father in heaven; for he makes his sun rise on the evil and on the good, and sends rain on the righteous and on the unrighteous. For if you love those who love you, what reward do you have? Do not even the tax collectors do the same? And if you greet only your brothers and sisters, what more are you doing than others? Do not even the Gentiles do the same? Be perfect, therefore, as your heavenly Father is perfect."

Here's a small "Christ teaching" from about the year 1000; it's "Anglo-Saxon, possibly Canterbury," according to the site:

More from that link:

Inside an ornamental frame, Jesus sits on a mountaintop, symmetrically flanked by six of his disciples. He holds a book in one hand while gesturing with the other, perhaps answering a question. Like his apostles, he wears a Roman-style pallium. The artist emphasized Jesus' role as teacher by placing him higher than his apostles, giving him more space, and positioning the apostles so that they all turn and look toward him.

The fabric of the apostles' and Jesus' clothing falls in agitated, patterned circles on the figures' knees and bellies and in repetitive, embedded V-folds on their chests, between their legs, and at the hems of their tunics. These animated lines move in spirals and zigzags, energizing the balanced composition.