Matthew 27:54

Now the centurion, and they that were with him watching Jesus, when they saw the earthquake, and the things that were done, feared exceedingly, saying, Truly this was the Son of God.

Practically all beings with anything to do with Christ confessed him in one way or another: (1) The angels confessed him (Luke 2:11). (2) The demons confessed him (Matthew 8:29). (3) Almighty God confessed him three times,, at his baptism, on the mount of transfiguration, and in a voice resembling thunder (John 12:28). (4) Simeon (Luke 2:30). (5) Anna (Luke 2:36). (6) Nicodemus (John 3:2). (7) Nathaniel (John 1:49). (8) John the Baptist (John 1:29). (9) Peter (Matthew 16:16). (10) Pilate (Matthew 27:24). (11) Pilate's wife (Matthew 27:19). (12) Judas Iscariot (Matthew 27:4). (13) The centurion and the people with him (Matthew 27:54). Christ confessed himself under oath and was put to death for it (John 19:7).

Some have made a great deal of the fact that only Matthew recorded the phenomena accompanying the crucifixion, but Mark's account of the confession of the centurion implies just as much as Matthew relates. Certainly the loud cry of a dying man was no such a phenomenon as to have moved a hardened soldier, doubtless accustomed to the bloody business that engaged him, to confess Christ as the Son of God. Here again, it was not one of the friends of Jesus but an unwilling participant in the dark drama and one whose normal indifference can be assumed, who rose to cry the truth, confess the Christ and smite his breast.