Calvin's Take on Jonah (1:7)

Jonah did not without reason mention this, -- that the passengers consulted together about casting lots; for we hence learn, that it was no ordinary tempest: it appeared then to be a token of God's wrath. For, if strong wind arose, it would not have been so strange, for such had been often the case; and if a tempest followed, it would not have been a thing unusual. It must then have been something more dreadful, as it filled men's minds with alarms so that they were conscious that God was present as an avenger: and we know, that it is not common with ungodly men to recognize the vengeance of Gods except in extreme dangers; but when God executes punishment on sins in an unusual manner, then men begin to acknowledge God's vengeance.
This very thing, Jonah now bears witness to, They said then each to his friend, Come, let us cast lots. Was it not an accustomed thing for them to cast lots whenever a tempest arose? By no means. They had recourse, no doubt, to this expedient, because they knew, that God had not raised up that tempest without some very great and very serious cause. This is one thing: but I cannot now pursue the subjects, I must therefore defer it until tomorrow.

Prayer

Grant, Almighty God, that though we are here disquieted in the midst of so many tossings, we may yet learn with tranquil minds to recumb on thy grace and promise, by which thou testifiest that thou wilt be ever near us, and not wait until by a strong hand thou drawest us to thyself, but that we may be, on the contrary, ever attentive to thy providence: may we know that our life not only depends on a thread, but also vanishes like the smoke, unless thou protectest it, so that we may recumb wholly on thy power; and may we also, while in a cheerful and quiet state, so call on thee, that relying on thy protection we may live in safety, and at the same time be careful, lest torpor, which draws away our minds and thoughts from meditating on the divine life, should creep over us, but may we, on the contrary, so earnestly seek thee, morning and evening, and at all times, that we may through life advance towards the mark thou hast set before us, until we at length reach that heavenly kingdom, which Christ thy Son has obtained for us by his own blood. Amen