Alban, The First Martyr of Britain, c. 304

Almighty God, by whose grace and power your holy martyr Alban triuimphed over suffering and was faithful even in death: Grant us, who now remember him in thanksgiving, to be so faithful in our witness to you in this world, that we may receive with him the crown of life; through Jesus Christ our Lord, who lives and reigns with you and the Holy Spirit, one God, for ever and ever. Amen.

The Rule of Saint Benedict

In What Order the Psalms Are to Be Said

Let this verse be said:
"Incline unto my aid, O God;
O Lord, make haste to help me,"
and the "Glory be to the Father"
then the hymn proper to each Hour.

Then at Prime on Sunday
four sections of Psalm 118 are to be said;
and at each of the remaining Hours,
that is Terce, Sext and None,
three sections of the same Psalm 118.

At Prime on Monday let three Psalms be said,
namely Psalms 1, 2 and 6.
And so each day at Prime until Sunday
let three Psalms be said in numerical order, to Psalm 19,
but with Psalms 9 and 17 each divided into two parts.
Thus it comes about that the Night Office on Sunday
always begins with Psalm 20.