Solid Scriptural Basis for the Trinity
Holtz alleges that the Trinity "has no scriptural basis." This is false. All throughout scripture it is taught that there is one God [Exodus 20:3; 1 Corinthians 8:5-6; Deuteronomy 6:4; Job 1:1, 6, 21; etc.] and that there are three distinct persons who are God: Father [Matthew 6:9; Matthew 6:32; Matthew 11:27; Matthew 3:15-17; John 3:16; John 4:23; John 5:45; John 6:27; 1 John 2:22; Hebrews 12:9; Ephesians 1:4; Romans 1:7; Romans 15:6; 1 Corinthians 8:6; 2 Corinthians 1:3], Son , and Holy Spirit/Ghost [Genesis 1:2; Psalm 110:1; Psalm 139:7-12; Acts 5:3-4; 1 Corinthians 2:10, 11; 1 Corinthians 12:11; Matthew 28:18-20; Titus 3:5-7; John 16:7; John 16:14; 1 John 2:27; John 14:26; 2 Corinthians 13:14; Romans 8:9-17; Ephesians 4:30; John 3:5-7].
Egregious Biblical Scholarship
Holtz alleges that "In the earliest gospel (Mark), Jesus never calls Himself Christ/Messiah" Jesus calls Himself the Messiah in Mark 14:61-64.
Holtz speaks of "Jesus' idiosyncratic Sonship claims." Jesus' Sonship claims are true. Truth about reality is knowable. Opposites cannot both be true. God exists.  Miracles are possible.  A miracle is an act of God to confirm the truth of God claimed by a messenger of God. The New Testament documents are reliable. In the New Testament, Jesus claimed to be God.  Jesus proved to be God by an unprecedented convergence of miracles. Therefore, Jesus was God in human flesh.
Holtz's Blasphemous Characterization of Jesus
Holtz blasphemously calls Jesus a "family-resenting bastard faith healer." Jesus was not anti-family  and was not a faith (psychosomatic) healer. He was not a bastard, but was born of a virgin. He performed unique miracles that were instantaneous and always successful. Faith healers cannot raise the dead or cure congenital blindness, etc.
Holtz says the "people Jesus allegedly reanimates might not actually have been clinically dead" Lazarus was clinically dead, as his corpse was rotting in the grave.
Hypostatic Union and Law of Non-Contradiction
Holtz says that Jesus being fully God and fully man is a contradiction, but this is not so. 
No Fabrications & Hallucinations
Holtz suggests that "some disciples began having … outright hallucination[s]" and could have made "fabrications." This is implausible .
 a. http://gotquestions.org/Jesus-God-man.html
 a. http://Christian-thinktank.hallucn.html
b. http://thebananarepublican.blogspot.com/2006/01/holtz-alleges-that-disciples-made.html [alleged fabrications]