Consider the time in human history when Jesus appeared. The coincidences are amazing:

• The Messianic prophecies of the Hebrews created a set of conditions which would be very difficult to fulfill. Given the various prophecies of the Hebrew Bible (Old Testament), and this topic has been analyzed in great detail, not just anyone could claim to be the Messiah (or, in Greek, Christ) and have that claim withstand centuries of scrutiny. Also, the overwhelming number of conditions to be met would make creating a Messiah out of whole cloth extremely difficult. How could anyone make up Jesus and have all the details of the stories about him fit all these prophecies?
• Many Hebrew Messianic prophecies are written in Hebrew poetry, which is one of the only poetic forms to be easily translated into other languages, because of the emphasis on parallelism. Greek and Latin poetry is almost impossible to translate completely, because it depends on inflections and rhythms of the original languages. Hebrew poetry depends on the structure of the content, not the language itself, and is fairly easy to reproduce in receptor languages. (I do not know of any other poetry like this.)
• Greeks developed a philosophical language. Without the progression from primitive nature-religion to basic natural philosophy to the ability to think abstractly about reality, most of the Christian message would be unintelligible, because humans wouldn't have had the cognitive abstractions to understand the philosophical and theological concepts necessary for Christianity. Through Christian history in the Occidental world, Greek philosophy has always gone hand-in-hand with Christianity.
• By conquering most of the world, the Greeks created a worldwide common language, something that had never before happened to this extent. A letter written in common Greek could be read almost anywhere in the civilized world.
• A translation of Hebrew scriptures into Greek was made before the time of Jesus. Because the Septuagint is so well dated, no one can say that the Old Testament was retroactively rewritten over the centuries with post-hoc "prophecies" to satisfy the events in the life of Jesus.
• Jesus taught in simple illustrations any person could understand. Wind, seeds, lamps, etc. These basic, fundamental illustrations would survive being written down into sophisticated Greek, but would remain easily understandable by both educated and uneducated hearers forever. These illustrations have survived the change from a written culture to a pictorial one, post-literate one. They will survive across almost any cultural change.
• Jesus completed his mission before the Jerusalem temple was destroyed in A.D. 70, an epoch making event which allows the New Testament period to be accurately dated. All Messianic prophecies would have to be fulfilled before this event.
• The teachings of Jesus were captured in Greek, a language which would never be forgotten, because it was the basis for medicine, history, philosophy, etc.
• Paul, a trained rabbi, explained Jesus teachings in doctrinal letters that, while written in Greek, use the same parallelism of Hebrew, creating scriptures which communicate much more meaning when translated into other languages than some Greek writings.
• The Roman Empire had created the Pax Romana, allowing those carrying the message of Jesus to travel widely and freely to disperse their ideas. Both before and after the Pax Romana, in the ancient world, this sort of travel would be extremely difficult.
• The New Testament was complete before mass media began, insuring it would be received as scripture in future generations rather than being lost in the noise of the flood of competing ideas when book printing, television, blogs, etc came about.

I am sure this is mere coincidence, and can easily be dismissed as such.

But, suppose God did want to inject a message into this world. Is there a more appropriate time in history to have done it?