Calvin's Public Prayers Before and After Teaching

The prayer which John Calvin was wont to use at the beginning of his lectures:

May the Lord grant, that we may engage in contemplating the mysteries of his heavenly wisdom with really incredible devotion, to his glory and our edification. Amen.

The prayer which John Calvin was accustomed to use at the commencement of his lectures:

Grant unto us, O Lord, to be occupied in the mysteries of the Heavenly wisdom, with true progress in piety, to thy glory and our edification. Amen.

--From Calvin’s Commentaries