The God and Father of our Lord Jesus Christ
These words are in the form of an oath, and are a solemn appeal to God, that knows all things, for the truth of the whole that he had declared in the foregoing verses, and of the remarkable deliverance related in the following. "God", says he, who is the searcher of hearts, and an omniscient being, to whom all things are open and manifest,
knoweth that I lie not;
in anyone single instance he had mentioned, nor in what he was about to declare; which because it was a fact done by a stratagem, and a good while ago, and which was not known to the Corinthians, and of which perhaps at that time he could not produce any witnesses; therefore calls God to testify the truth of it, whom he describes as "the God and Father of our Lord Jesus Christ"; God is his "God" as Mediator, and head of the elect, to whom as to them he is a covenant God; and as man, being his Creator, supporter, and the object of his faith, hope, love, and worship; and his "Father" as God, and the Son of God, by supernatural generation, being the only begotten of him, in a way ineffable and inexpressible: "and who is blessed for evermore"; in himself, and Son, and Spirit, and is the source of all happiness to his creatures.