The (Revised Version, and the) centurion answered and said. His reply as reported in Matthew is almost verbally the same as his second message in Luke, save for the important addition there of his unworthiness to come.
Lord, I am not worthy ( ἱκανός); Matthew 3:11, note. That thou shouldest come under my roof. "My," probably emphatic: however thou mayest honour others. But speak the word only; but only say the word (Revised Version); ἀλλὰ μόνον εἰπὲ λόγῳ.
Only say with a single word what is to be done, and it shall be done (cf. Matthew 3:16). And my servant shall be healed ( ἰαθήσεται); Matthew 4:23, note.