The angel said to them, "Do not be afraid. I bring you good news of great joy that will be for all the people. Today in the town of David a Savior has been born to you; he is Christ the Lord."--Luke 2:10-11
Christianity was founded on the life and teachings of a Jew named Jesus Christ. The English word "Jesus" comes from the Greek form of the Hebrew Joshua, a common name which means "savior."
"Christ" is a title and it comes from the Greek form of the Hebrew Messiah, meaning "anointed one." Since the time of the earliest Christians, "Christ" has been used both as a surname and as a name that stands alone.
Christians believe, and the majority of scholars agree, that Jesus was an actual historical figure. The Christian calendar, in use throughout most of the Western world, centers around the birth of Jesus. The abbreviation "AD" stands for the Latin anno domini, "in the year of our Lord." Interestingly, Jesus was actually born a few years "Before Christ" (BC) due to a calculation error of the monk (Dionysius Exiguus) who established the Christian calendar in 525 AD.
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