This work by John Gill is on Efficacious Grace, a main tenet of Calvinism, that Grace cannot be resisted by the sinner.
Classical commentary on Galatians by Martin Luther.
The Imitation of Christ is meditations on the life and teachings of Jesus.
Written by Jesuit Ignatius of Loyola, this book is about spiritual exercises. The context of this work is that Catholics belief that works accumulate to possibly save a person’s soul, so that is the idea of the work.