other apologists have not made as explicit, and in the end, the concept that the Holy Spirit convinces the heart of truth becomes the central theme of the apologetic argument. Historical and legal evidentialism A variety of arguments has been forwarded by legal scholars such as Simon Greenleaf and John Warwick Montgomery, by expert forensic investigators such as cold case homicide detective J. Warner Wallace, and academic historical scholars, such as Edwin M. Yamauchi. These arguments present a case for the historicity of the resurrection of Christ per current legal standards of evidence or undermining the pagan myth hypothesis for the origin of Christianity. Regarding evidence for the historicity of the Book of Acts, A. N. Sherwin-White states that: Moral apologetics Moral apologetics states that real moral obligation is a fact. Catholic apologist Peter Kreeft said, "We are really, truly, objectively obligated to do good and avoid evil." In moral apologetics, the arguments for man's sinfulness and man's need for redemption are stressed. Examples of this type of apologetic would be Jonathan Edwards' sermon "Sinners in the Hands of an Angry God." The Four Spiritual Laws religious tract (Campus Crusade for Christ) would be another example. Defense of miracles C. S. Lewis, Norman Geisler, William Lane Craig and Christians who engage in jurisprudence Christian apologetics have argued that miracles are reasonable and plausible wherever an all-powerful Creator is postulated. In other words, it is postulated that if God exists, miracles cannot be postulated as impossible or inherently improbable. Philosophical apologetics Philosophical apologetics concerns itself primarily with arguments for the existence of God, although they do not exclusively focus on this area. They do not argue for the veracity of Christianity over other religions but merely for the existence of a Creator deity. Omnipotence and omniscience are implied in these arguments to greater or lesser degrees: some argue for an interventionist god, some are equally relevant to a Deist conception of God. They do not support hard polytheism, but could be used to describe the first god who created many other gods; however, the arguments are only relevant when applied to the first god (the first cause, pure act and unmoved mover; it is a contradiction a priori to suppose a plurality of "pure acts" or "first causes" or "unmoved movers"). These arguments can be grouped into several categories: Cosmological argument – Argues that the existence of the universe demonstrates that