John Trapp on Jeremiah 39:18

Ver. 18. For I will ſurely deliver thee] Heb. delivering deliver thee. It would be a great ſtay of mind if God ſhould ſay the ſame to us in particular and by name, as he doth here to this Ethiopian: And yet he ſaith no leſſe to us in the precious promiſes, which we are by faith to appropriate.

But thy life ſhall be for a prey unto thee] Pro lucro ceſſura eſt: for ſaving my Prophets life, thou ſhall have thine own: ſo ſure a gain is godlineſſe.

Becauſe thou haſt put thy truſt in me] What may not faith have at Gods hands? Thoſe that truſt him, do, after a ſort, engage him to deliver them, and to doe them good.