This month, Logos Bible Software is offering Jaroslav Pelikan’s Acts commentary from the Brazos series for free.
The deeply discounted companion volumes are from the same series and include Stanley Hauerwas’s Matthew and Peter Leithart’s 1 & 2 Kings.
Similarly, Verbum is offering for free the Matthew volume of Thomas Aquinas’s Catena Aurea.
The deeply discounted companion volumes there are from the Fathers of the Church series and include Jerome’s and Hilary’s commentaries on Matthew.