As in plants and tree, what is the fruit of the tree? nothing but the juice of the tree applied and digested into fruit; so, indeed, doctrine is that that runs through the whole life of a Christian, and the strength of doctrine is in comfort. Comfort is nothing but doctrine sweetly digested and applied to the affections. He will never be a good comforter, that doth not first stablish the judgment in some grounds of doctrine, to shew whence the comfort flows. – Richard Sibbes, An Exposition of 2 Corinthians 1