In the Daily Office, several themes recur on particular days each week.
On Sundays we rejoice in Christ’s resurrection, on Saturdays we relax in God’s creation, on Fridays we remember Christ’s sacrifice on the cross. The collects appointed for those three days (BCP 98-99, 123) draw the themes out fairly obviously.
It’s a little more subtle, but on Thursdays we can discern a baptismal theme. The canticle suggested for use after the first lesson on Thursday mornings is the Song of Moses (BCP 85). The story of the Exodus is linked in the Christian mind with the Easter Vigil, and therefore with Baptism. For that reason, the Song of Moses is also to be used on Sunday mornings throughout Easter season.
Today’s readings center on two characters in peril on the sea.
Jonah, who has survived being in the belly of the whale (baptism by ingestion?), finally gets around to his mission, preaching to the people of Nineveh.
Paul’s confidence in God reassures the sailors that they will survive the violent storm and the shipwreck. Note that Paul also celebrates the Eucharist with them, the breaking and blessing of bread that follows Baptism.
We are baptized into Christ’s life, and each week we can remember, relax, and rejoice in God’s saving grace.