The most common word in the Greek NT — a pronoun meaning 'he,' 'she,' 'it,' or in the emphatic position, 'himself/herself/itself' and 'the same.' Autos appears over 5,500 times. Its theological significance lies in emphatic uses that stress identity and personal agency.
When used emphatically, autos makes bold christological claims: 'He himself bore our sins' (1 Peter 2:24) — not a proxy but the Son personally. 'Jesus himself stood among them' (Luke 24:36) — bodily resurrection, not a spirit. The emphatic autos insists on personal, direct divine action — God Himself acts, Christ Himself suffers, the Spirit Himself intercedes.