The cognomen of the first Roman emperor, C. Julius Caesar Octavianus, during whose reign Christ was born (Luke 2:1). His decree that "all the world should be taxed" was the divinely ordered occasion of Jesus' being born, according to prophecy (Micah 5:2), in Bethlehem. This name being simply a title meaning "majesty" or "venerable," first given to him by the senate (B.C. 27), was borne by succeeding emperors. Before his death (A.D. 14) he associated Tiberius with him in the empire (Luke 3:1), by whom he was succeeded.
(venerable) C''sar , the first Roman emperor. He was born A.U.C. 691, B.C. 63. His father was Caius Octavius; his mother Atia, daughter of Julia the sister of C. Julius C'sar. He was principally educated by his great-uncle Julius C'sar, and was made his heir. After his murder, the young Octavius, then Caius Julius C'sar Octavianus, was taken into the triumvirate with Antony and Lepidus, and, after the removal of the latter, divided the empire with Antony. The struggle for the supreme power was terminated in favor of Octavianus by the battle of Actium, B.C. 31. On this victory he was saluted imperator by the senate, who conferred on him the title Augustus, B.C. 27. The first link binding him to New Testament history is his treatment of Herod after the battle of Actium. That prince, who had espoused Antony's side, found himself pardoned, taken into favor and confirmed, nay even increased, in his power. After Herod's death, in A.D. 4, Augustus divided his dominions, almost exactly according to his dying directions, among his sons. Augustus died in Nola in Campania, Aug. 19, A.U.C. 767, A.D. 14, in his 76th year; but long before his death he had associated Tiberius with him in the empire.
(Acts 27:1.: literally, of Sebaste, the Greek form of Augusta, the name given to Caesarea in honour of Augustus Caesar). Probably this "band" or cohort consisted of Samaritan soldiers belonging to Caesarea.