Luke 10:17
English originalThe 70/72 returned with "joy." Though "joy" may be expressed in different ways by different individuals at various times, it is a characteristic of salvation (Luke 1:14; 2:10; 8:13; 15:7, 10; 24:41, 52).
The demons submit to the name of Jesus. Though Luke does not mention the power to cast out demons in Luke 10:1-16, it is rightly understood from Luke 9:1-2 that the mission of the 70/72 included such power. God's Kingdom (Luke 10:9) and the defeat of Satan/demons (Luke 10:17-18) are brought together in Luke 11:20.
The name of Jesus should not be understood as some magical spell or incantation. It refers to the power of Jesus (Acts 19:13; cf. Col. 2:15).
Jesus says, "I saw Satan fall like lightning from heaven" (Luke 10:18). The tense of the verb here is inceptive aorist, thus it should be understood as "I was seeing." So, Luke understood each exorcism by the 70/72 as demonstrating the defeat of Satan. Hendriksen quoting Godet says, "[Jesus meant] While you were expelling the subordinates [the demons] I was seeing the master [Satan] fall." He goes on and adds:
One important item should be added to this interpretation: in all probability the Master's exalted language, "I was watching Satan fall from heaven like lightning," was not only a reference to this one event, namely, the success of the seventy-two, but rather to all similar events that would take place afterward. In other words, Jesus viewed the triumph of these seventy-two as being symptomatic of ever so many other victories over Satan throughout the course of the new dispensation, triumphs accomplished through the work of thousands of other missionaries. He was looking far into the future (cf. Matt. 24:14). He saw the ultimate discomfiture of the ugly dragon and all his minions.
The casting out of demons demonstrated the defeat of Satan. It demonstrates that the Kingdom of God and its King has come (cf. Luke 11:20-22).
As to the phrase "I have given you authority to trample on snakes and scorpions and to overcome all the power of the enemy," Hendriksen says:
Note the following:
a. Jesus often made use of figurative language, though such language was frequently interpreted literally (Matt. 16:6-12; Luke 8:52, 53; John 2:19-21; 3:3, 4; 4:13-15; 6:51, 52; 11:11-13, etc.).
b. In the immediately preceding passage (verse 18) the Lord had used symbolical language when he spoke of seeing Satan falling from heaven like lightning.
c. If elsewhere Satan is called "dragon" and "serpent" (Rev. 12:9; 20:2), why should it be strange if also here in Luke 10:19 the domain of the prince of evil is called that of snakes and scorpions? Is it not Satans intention to poison the minds of men and to impart the sting of death to all who oppose him?
d. There is no record of any literal fulfilment of this statement.
e. The true interpretation is also supported by the explanatory expression "(I have given you authority over) all the power of the enemy." For explanation see Rom. 16:20, "The God of peace will soon crush Satan under your feet."
As to the promise, And nothing will in any way hurt you, see John 10:27, 28; Rom. 8:28-39.
The ability to cast out demons does not mean one is necessarily saved (cf. Acts 19:15, etc.). While it glorifies God and one should be joyful that at the name of Jesus every knee bows (Phil. 2:10, et. al.), Jesus says, "do not rejoice that the spirits submit to you, but rejoice that your names are written in heaven." For the elect the casting out of demons is insignificant as compared to the ultimate glory of being saved; that is of having one's name recorded in heaven's book of life (Isa. 4:3; Dan. 12:1; Rev. 3:5; 20:12, 15). Casting out of demons is a temporary affair, while everlasting salvation to God's glory alone, never ends.
seventy returned. The narrative moves forward to when the disciples returned from their mission (vv. 1-12). joy. The disciples rejoiced in the success they saw in ministry.