Although the work of regeneration by the Holy Spirit was wrought under the Old Testament, even from the foundation of the world, and the doctrine of it was recorded in the Scriptures, yet the revelation of it was but obscure in comparison of that light and evidence which it is brought forth into by the gospel. This is evident from the discourse which our blessed Saviour had with Nicodemus on this subject; for when he acquainted him clearly with the doctrine of it, he was surprised, and fell into that inquiry, which argued some amazement, "How can these things be?" But yet the reply of our Saviour manifests that he might have attained a better acquaintance with it out of the Scripture than he had done: