How to read the Psalms

What is interesting is that Wesley does not merely read the verses [of Ps 22] that show up in the New Testament christologically; he sees the entire psalm as a consistently christological text, complete with an evangelical message. Wesley assumes the Old Testament is to be read as part of the Christian canon, without question, because even there the Gospel is plainly evident. The upshot is that without the Old Testament, the New Testament would be unintelligible for Wesley.— Reading the Way to Heaven, page 91