Luke 7:8
For I also am a man set under authority, having under me soldiers, and I say unto one, Go, and he goeth; and to another, Come, and he cometh; and to my servant, Do this, and he doeth it. For I also am a man set under authority, having under me soldiers, and I say unto one, Go, and he goeth; and to another, Come, and he cometh; and to my servant, Do this, and he doeth it.
The verse records the centurion's argument from his own delegated experience of authority, in which his soldiers and his servant obey his orders to go, to come, and to do what he commands. By that analogy he recognized that Jesus represents the power of the infinite God and has authority over sickness, so that Jesus need only speak the word to command the disease to depart and heal his servant without coming in person. All created things are subject to Jesus' word, and He can command heavenly messengers to bring healing. His faith did not demand outward signs and did not question Jesus' power.
His confidence rested not on his own worthiness but on Jesus' power and mercy, making his great need his plea for help. The servant was healed that same hour. The account rewards the Capernaum centurion's faith and shows that people among the Gentiles, though regarded by many as unworthy of salvation, could hunger for the light of truth. The centurion's conversion and faith showed Christ's work extending beyond Israel and was an early example of the gospel reaching the Gentiles.