Luke said that Jesus had commanded (παρήγγελλεν) the unclean spirit (γὰρ τῷ πνεύματι τῷ ἀκαθάρτῳ) to come out of this man (ἐξελθεῖν ἀπὸ τοῦ ἀνθρώπου). Many times (πολλοῖς γὰρ χρόνοις), it had seized him (συνηρπάκει αὐτόν). Thus, he was bound with chains (καὶ ἐδεσμεύετο ἁλύσεσιν) and kept in foot shackles (καὶ πέδαις φυλασσόμενος). However, he would break the chains or bonds (καὶ διαρήσσων τὰ δεσμὰ). He was driven (ἠλαύνετο) by a demon (ἀπὸ τοῦ δαιμονίου) into the wild desert (εἰς τὰς ἐρήμους). Here in Luke, Jesus commanded the unclean spirit to come out of the demoniac. Mark, chapter 5:8, also indicated that Jesus said to the demoniac that this unclean spirit should come out of this man. Thus, Jesus spoke directly to the unclean spirit here also. While Matthew, chapter 8:28, just said that these possessed men were wild people, Mark, chapter 5:4-5, had an elaborate description much like this in Luke. Mark said that this demoniac had often been bound or restrained with foot shackles and chains. However, he tore up these chains and shattered his foot shackles into pieces. No one had the strength to subdue him. Constantly, all night and day, he was howling or crying among the tombs and on the hills or in the mountains. He was cutting or bruising himself with stones. This was not a pretty sight or a happy guy. Have you ever met a crazy possessed person?
This is a description of this demoniac, while Matthew just said that he was a wild person, but Luke, chapter 8:29, has a description much like this. Mark said that this demoniac had often been bound or restrained with foot shackles and chains (διὰ τὸ αὐτὸν πολλάκις πέδαις καὶ ἁλύσεσιν δεδέσθαι). However, he tore in two the chains (καὶ διεσπάσθαι ὑπ’ αὐτοῦ τὰς ἁλύσεις). He broke or shattered his foot shackles into pieces (καὶ τὰς πέδας συντετρῖφθαι). No one had the strength to subdue him (καὶ οὐδεὶς ἴσχυεν αὐτὸν δαμάσαι). Constantly all night and day (καὶ διὰ παντὸς νυκτὸς καὶ ἡμέρας), he was always howling or crying among the tombs and on the hills or mountains (ἐν τοῖς μνήμασιν καὶ ἐν τοῖς ὄρεσιν ἦν κράζων). He was cutting or bruising himself with stones (καὶ κατακόπτων ἑαυτὸν λίθοις). This was not a pretty sight or a happy guy.