Revelation 11:5

“And if any man will hurt them, etc.] Do any injury to their persons, or properties, oppose their writings, blaspheme their doctrines, and hinder their ministrations; whoever; they be, whether they be any that live among them, or in other parts; whether they be secret or open enemies; or whether they be of the outward court, or be really Gentiles or Papists; and especially if they do them any injustice, if they wrong, oppress, afflict, and distress them knowingly and willingly: fire proceedeth out of their mouth; by which may be meant the word of God, which they preach and hold forth, which is comparable to fire, (<242329>Jeremiah 23:29), both for light, it being a means of enlightening…”

“will hurt--Greek, "wishes," or "desires to hurt them." fire . . . devoureth--(Compare Jer 5:14; Jer 23:29). out of their mouth--not literally, but God makes their inspired denunciations of judgment to come to pass and devour their enemies. if any man will hurt them--twice repeated, to mark the immediate certainty of the accomplishment. in this manner--so in like manner as he tries to hurt them (compare Rev 13:10). Retribution in kind.”

“And if any man will hurt them - This implies that there would be those who would be disposed to injure or wrong them; that is, that they would be liable to persecution. The word “will” is here more than the mere sign of the future; it denotes “intention, purpose, design,” θέλεὶ thelei - “if any man wills or purposes to injure them.” See a similar use of the word in 1 Timothy 6:9. The word “hurt” here means to do “injury” or “injustice” - ἀδικῆσαι adikēsai - and may refer to wrong in any form - whether in respect to their character, opinions, persons, or property. The general sense is, that there would be those who would be disposed to do them harm, and we should naturally look for the…”

“If any would kill them - As the Israelites would have done Moses and Aaron, Num 16:41. He must be killed thus - By that devouring fire. Revelation 11:6”

“11:5 In one of the psalms, God is portrayed with fire coming from his mouth, a picture of judgment on his enemies (Ps 18:8; see also 2 Sam 22:9). Cp. Elijah, 2 Kgs 1:1-15.”

“fire: Num 16:28-35; Kg2 1:10-12; Psa 18:8; Isa 11:4; Jer 1:10, Jer 5:14; Eze 43:3; Hos 6:5; Zac 1:6, Zac 2:8; Act 9:4, Act 9:5 Revelation 11:6”