In a recent posting about the languages used in Eretz Israel at the time of Jesus: Did Jesus speak Greek, it is argued that Greek was much more in use in the first century AD than usually argued, and that the possibility that Jesus knew some Greek should be reconsidered. His conclusion to the question posed in the headline is: “Can we know for sure that Jesus spoke Greek? No. Is it reasonable to assume that he could speak Greek and did upon occasion? Yes, I believe so. In fact, it wouldn’t surprise me if some of the variations in the Gospels among the sayings of Jesus reflect that fact that he said more or less the same things in Aramaic, Hebrew, and/or Greek.”
See then the more and even better argued article by G. Scott Gleaves, with the same title: Did Jesus speak Greek?, to be found here. His conclusion runs thus: “The “growing mass of evidence” has now become a convincing witness to the wide use of Greek in Palestine even among the members of the inner circle of disciples who followed Jesus.”
Then there is a book out by the very same author dealing with this question:
G. Scott Gleaves, Did Jesus Speak Greek?: The Emerging Evidence of Greek Dominance in First-Century Palestine. Pickwick Publications, 2015. 240 pp. (Also available in Kindle version)
G. Scott Gleaves is the Dean and Associate Professor of New Testament Studies and Christian Ministry of the V. P. Black College of Biblical Studies and Kearley Graduate School of Theology at Faulkner University in Montgomery, Alabama.