Bonar's Rent Veil treats a variety of topics, most directly the atonement. The title refers to Christ and Christ's body. Bonar claims that without the broken ("rent") body of Christ, there would still be a barrier ("veil") between persons and God. With Christ's death, there is the possibility of the forgiveness of sins.
In Bonar's interesting treatment of the atonement, he also makes some intriguing points regarding the relationship of the Old Testament to the New Testament. Throughout, Bonar supports his points with liberal quotations from Scripture.
The final third of his book provides an instructive call for believers. In it, Bonar extols believers to, and describes for them, the kinds of people God desires--worshipers, temples, priests, and kings. Despite being published over a hundred years ago, Bonar's prose is surprisingly up-to-date and easy to follow. For an interesting treatment of the atonement, one can do no better than Bonar's Rent Veil.
Horatius Bonar (1808-89) was a well-known nineteenth-century minister called “the prince of Scottish hymn-writers,” and also a prolific writer of scriptural, practical, and experiential Christian literature.