² tn Grk “keeps.” In a context that speaks of “holding on to what you have,” the idea here is one of continued faithful behavior (BDAG 1002 s.v. τηρέω 3 has “ὁ τηρῶν τὰ ἔργα μου the one who takes my deeds to heart Rv 2:26”).

² tn Grk “I had the necessity.” The term ἀνάγκη (anankē, “necessity”) often connotes urgency or distress. In this context, Jude is indicating that the more comprehensive treatment about the faith shared between himself and his readers was not nearly as urgent as the letter he found it now necessary to write.

³ tn Grk “which.” The antecedent is the “things hard to understand,” not the entirety of Paul’s letters. A significant principle is seen here: The primary proof texts used for faith and practice ought to be the clear passages that are undisputed in their meaning. Heresy today is still largely built on obscure texts.

³ sn By the use of the future tense (will infiltrate), Peter is boldly prophesying the role that false teachers will have before these Gentile believers. It was necessary for him to establish both his own credentials and to anchor his audience’s faith in the written Word before he could get to this point, for these false teachers will question both.

¹ tc Although there may be only a slight difference in translation, the term translated as “trust” is the adjective πιστούς (pistous). This is neither as common nor as clear as the verb πιστεύω (pisteuō, “believe, trust”). Consequently, most mss have the present participle πιστεύοντας (pisteuontas; P⁷² א C P Ψ 5 81 436 442 1175 1243 1611 1739 1852 2492 M), or the aorist participle πιστεύσαντες (pisteusantes; 33 2344), while A B 307^c 1735 vg have the adjective. Though the external evidence on its behalf is not in itself compelling, internally πιστούς is to be preferred. In the NT the adjective is routinely taken passively in the sense of “faithful” (BDAG 820 s.v. πιστός 1). That may be part of the force here as well: “you are now faithful to God,” although the primary force in this context seems to be that of trusting. Nevertheless, it is difficult to separate faith from faithfulness in NT descriptions of Christians’ dependence on God.

² tn Grk “power to deposit seed.” Though it is not as likely, some construe this phrase to mean “power to conceive seed,” making the whole verse about Sarah: “by faith, even though Sarah herself was barren and too old, she received ability to conceive because she regarded the one who had given the promise to be trustworthy.”

¹ tn Or “showing that genuine faith is productive.” At issue between these two translations is the force of ἀγαθήν (agathēn): Is it attributive (as the text has it) or predicate (as in this note)? A number of considerations point in the direction of a predicate ἀγαθήν (e.g., separation from the noun πίστιν [pistin] by the verb, the possibility that the construction is an object-complement, etc.), though this is not usually seen as an option in either translations or commentaries. Cf. ExSyn 188-89, 312-13, for a discussion. Contextually, it makes an intriguing statement, for it suggests a synthetic or synonymous parallel: “‘Slaves should be wholly subject to their masters…demonstrating that all [genuine] faith is productive, with the result [ecbatic ἵνα] that they will completely adorn the doctrine of God.’ The point of the text, then, if this understanding is correct, is an exhortation to slaves to demonstrate that their faith is sincere and results in holy behavior. If taken this way, the text seems to support the idea that saving faith does not fail, but even results in good works” (ExSyn 312-13). The translation of ἀγαθήν as an attributive adjective, however, also makes good sense.

² sn With the faith and love that are in Christ Jesus. This describes the manner in which Timothy must hold to the standard (similar to Paul’s call for him to give attention to his life and his teaching in 1 Tim 4:11-16).

¹ tn This phrase literally means “compete in the good competition of the faith,” using words that may refer to a race or to a boxing or wrestling match: “run the good race” or “fight the good fight.” The similar phrase in 1 Tim 1:18 uses a military picture and is more literally “war the good warfare.”

¹ sn Crown to boast of (Grk “crown of boasting”). Paul uses boasting or exultation to describe the Christian’s delight in being commended for faithful service by the Lord at his return (1 Cor 9:15-16; 2 Cor 1:12-14; 10:13-18; Phil 2:16; and 1 Cor 3:14; 4:5).

³ tn The Greek text has “who (ὅς, hos) is a faithful minister.” The above translation conveys the antecedent of the relative pronoun quite well and avoids the redundancy with the following substantival participle of v. 8, namely, “who told” (ὁ δηλώσας, ho dēlōsas).

¹ sn The conjunctive phrase For this reason points back to the preceding section, vv. 3-14, which is also summed up in this verse in the expression because I have heard of your faith. In other words, the author’s prayer can be made for his audience because he knows that they are true believers.

¹ tn Grk “Think about your calling.” “Calling” in Paul’s writings usually refers to God’s work of drawing people to faith in Christ. The following verses show that “calling” here stands by metonymy for their circumstances when they became Christians, leading to the translation “the circumstances of your call.”

¹ tn Grk “Why? Because not by faith but as though by works.” The verb (“they pursued [it]”) is to be supplied from the preceding verse for the sake of English style; yet a certain literary power is seen in Paul’s laconic style.

³ sn These perversions of the truth refer to the kinds of threats that would undermine repentance toward God and faith in the Lord Jesus Christ (cf. v. 21). Instead these false teachers would arise from within the Ephesian congregation (cf. 1 John 2:18-19) and would seek to draw the disciples away after them.

⁴ sn The description lame from birth makes clear how serious the condition was, and how real it was. This event is very similar to Acts 3:1-10, except here the lame man’s faith is clear from the start.

² tn The Greek word translated “Holy One” here (ὅσιόν, hosion) is related to the use of ὅσια (hosia) in v. 34. The link is a wordplay. The Holy One, who does not die, brings the faithful holy blessings of promise to the people.

³ sn Filled with jealousy. In Acts, the term “jealousy” (ζήλος, zēlos) occurs only here and in Acts 13:45. It is a key term in Judaism for religiously motivated rage (1 Macc 2:24; 1QH 14:13-15; m. Sanhedrin 9:5). It was a zeal motivated by a desire to maintain the purity of the faith.

² sn Amazement is a frequent response to miracles of Jesus or the apostles. These took the ancients by as much surprise as they would people today. But in terms of response to what God is doing, amazement does not equal faith (Luke 4:36; 5:9, 26; 7:16).

² sn Going up to the temple at the time for prayer. The earliest Christians, being of Jewish roots, were still participating in the institutions of Judaism at this point. Their faith in Christ did not make them non-Jewish in their practices.