...there is the basic human problem of having more than one year's worth of readings. A single year is a natural period of time; it is healthy, pedagogically superior, and deeply consoling to come back, year after year, to the same readings for a given Sunday or weekday. This has been my experience. You get to know the Sunday readings especially; they become bone of your bone. You start to think of Sundays in terms of their readings, chants, and prayers, which stick in the mind all the more firmly because they are both spoken or chanted and read in the missal you are holding (more senses engaged). In this way the traditional Western liturgy shows its affinity to the Eastern liturgies, which go so far as to name Sundays after their Gospels or after some particular dogma emphasized. In the old days, the fourteenth Sunday after Pentecost had a distinctive identity: Protector noster was the introit, you knew its melody, and the whole Mass grew to be familiar, like a much-loved garden or a trail through the woods. Nowadays, who knows what the "tenth Sunday of Ordinary Time" is about! It's anyone's guess.
There are a number of circumstances where happy felicity reveals the very underlying connection, which is presumed, by some at least, to be lacking:
Protector noster: Behold, O God, our protector, and look on the face of Thy Christ; for better is one day in Thy courts above thousands.
Collect: Ecclesiam tuam, domine, miseracio continuata mundet et muniat
O LORD, we beseech thee, let thy continual pity cleanse and defend thy Church; and, because it cannot continue in safety without thy succour, preserve it evermore by thy help and goodness; through Jesus Christ our Lord. Amen.
Galatians 5:16-24 Walk with the Spirit.
Keep us from harm: Matthew 6:24 – God provides [teaching]
24 No man can serve two masters. For either he will hate the one, and love the other: or he will sustain the one, and despise the other. You cannot serve God and mammon.
This casts doubt on the claims of Lutherans and Anglicans (see also below) to be the true preservers.
That is to say, which readings go better with the following collects?