On February 19 – 21, 2014, Dr. Stanley E. Porter gave a series of four lectures titled “Did Paul Meet Jesus Before the Damascus Road? The Evidence and the Implications.” This lecture series was part of the H. Orton Wiley Lecture Series in Theology held by Porter’s alma mater Point Loma Nazarene University (PLNU) in San Diego, California.
Lecture 1 – “What Scholars Have Said in the Past”
(During the period 1901-1913, William Ramsey, Johannes Weiss, James Hope Moulton argued that Paul indeed had interaction with Jesus during the days of His flesh.)
Lecture 2 – “What Scholars Now Say”
(F.C. Bauer, William Wrede, and Rudolph Bultmann drove a wedge between Jesus and Paul which, more or less, eliminated the question from consideration.)
Lecture 3 – “What the Bible Does and Does Not Say”
(Acts 9:1-9; 1 Corinthians 9:1; 2 Corinthians 5:16 can be best understood if Paul had encountered Jesus during the latter’s earthly life.)
Lecture 4 – “The Implications of Paul Having Met Jesus”
(The implication is that we should look for continuity between Jesus and Paul, not discontinuity.)
The parenthetical notes above are mine. I should add that while Porter did not convince me that Paul interacted with Jesus before the crucifixion, he did convince that Paul might have interacted with Jesus before the crucifixion. In other words, there’s no basis for assuming that Paul had no interactions with the earthly Jesus.
You should be able to find this lecture series on iTunes University. You can also find PLNU’s page describing all this here.