3:1 But mark this: There will be terrible [term can mean fierce, dangerous, hard to handle or bear, troublesome] times in the last days [the period between Christ’s ascension and His second coming].
3:2 [Paul listed 19 different traits that would characterize people in the last days] People will be  lovers of themselves [more interested in pleasing self than in pleasing God; other sinful attitudes grow when we set our eyes on ourselves rather than God],  lovers of money [materialistic; cf. Matt. 6:24],  boastful [a way to draw attention to oneself],  proud [tend to look down on others],  abusive [attack others with abusive speech],  disobedient to their parents [and to others in positions of authority],  ungrateful [demonstrate a lack of appreciation to God and others who make efforts on their behalf],  unholy [regard nothing as sacred],
3:3  without love [unwilling to show natural human affection (particularly toward family)],  unforgiving [remember wrongs and hold grudges],  slanderous [from the same word used for Devil in the NT; term means “accuser”],  without self-control [lack of self-discipline],  brutal [word means “fierce” and implies an inability to be tamed],  not lovers of the good [laugh at morality; scorn virtue],
3:4  treacherous [traitors who are loyal only to themselves; willing to betray the trust of others],  rash [reckless],  conceited [hold an inflated opinion of themselves],  lovers of pleasure rather than lovers of God—
3:5  having a form of godliness [know the talk and go through the motions but do not give evidence of a transformed life; their Christianity is for show, not for real] but denying its power. Have nothing to do with them [those who profess Christ but are not changed by Him].
3:6 They [false teachers] are the kind who worm [implies that they get in under false pretenses; manipulative] their way [false teachers used underhanded methods to try to win converts] into homes and gain control over [capture the imagination, interest, and allegiance of] weak-willed [gullible; little; silly] women [particular women in the Ephesian church, not women in general], who are loaded down with sins [an indication that their lack of spiritual insight made them susceptible to temptation] and are swayed by all kinds of evil desires,
3:7 always learning but never able to acknowledge the truth.
3:8 Just as Jannes and Jambres [the names of these individuals do not appear in the OT but are mentioned in Jewish, pagan, and Christian sources as two of Pharaoh’s magicians who opposed God’s authority through Moses (cf. Ex. 7:11; 9:11)] opposed Moses, so [like Jannes and Jambres] also these men [the false teachers] oppose the truth—men of depraved [corrupted] minds, who, as far as the faith is concerned, are rejected [worthless or of no spiritual usefulness; same Gr. word translated “disqualified” in 1 Cor. 9:27].
3:9 But they will not get very far because, as in the case of those men, their folly will [in the due course of time] be clear to everyone.
3:10 You, however, know all about [note 9 items that demonstrated the purity of Paul’s motives in preaching the gospel]  my teaching [the gospel message Paul proclaimed],  my way of life [Paul’s conduct was characterized by obedience to God],  my purpose [cf. Acts 20:24],  faith,  patience,  love [the kind of love that acts in the best interests of others],  endurance [Paul stayed faithful to His God-given purpose regardless of opposition, trouble, persecution, or pressure to do otherwise],
3:11  persecutions,  sufferings—what kinds of things happened to me in [note three Galatian cities Paul visited on his first missionary journey…] Antioch, Iconium and Lystra [Timothy’s hometown; Paul was stoned and left for dead there (cf. Acts 14:19-20)], the persecutions I endured [Paul shared the gospel at great risk to his own life; cf. 2 Cor. 11:22-33]. Yet the Lord rescued me from all of them.
3:12 In fact, everyone who wants to live a godly life in Christ Jesus will be persecuted [word suggests being hunted like a wild animal; cf. Jn. 15:18-21],
3:13 while evil men and impostors [term literally means sorcerers or wizards (perhaps alludes to earlier reference to Jannes and Jambres)] will go [note downward progress…] from bad to worse, deceiving and being deceived.
3:14 But as for you, continue [“hold to” or “remain”; indicates a permanent life-style; constantly learn more of God’s Word] in what you have learned [OT teachings; the gospel; the basics never change] and have become convinced of [or “have firmly believed”], because you know those [included Timothy’s grandmother Lois, his mother Eunice (1:5), Paul, and perhaps others] from whom you learned it,
3:15 and how from infancy [infant; partially grown; perhaps from age of five years; cf. 2 Tim. 1:5 re: influence of Timothy’s grandmother (Lois) and mother (Eunice)] you have known the holy Scriptures [sacred writings], which are able to make you wise [cf. Gal. 3:24; Scriptures supplies information for decision] for salvation through faith in Christ Jesus [cf. Acts 4:12].
3:16 All [every] Scripture [OT writings; today refers to OT and NT; see 2 Pet. 5:7 re: Peter’s affirmation of Paul’s letters] is God-breathed [Gr. theopneustos; divinely-inspired; cf. 2 Pet. 1:20-21] and is useful [practical value] for teaching [teaches us which path to walk; instruction in divine truth], rebuking [shows where we get off the path; exposing/refuting doctrinal error and personal wrongs], correcting [shows us how to get back on the path; setting people straight by pointing them in the right direction] and training in righteousness [shows us how to stay on the path; right attitudes/actions],
3:17 so that the man [every believer] of God may be thoroughly [properly] equipped [fitted out; specially adapted] for every good work.