Discovery Box2 Peter 1:5 
Context1:5 For this very reason, 1 make every effort 2 to add to your faith excellence, 3 to excellence, knowledge;
2 Peter 1:10
Context1:10 Therefore, brothers and sisters, 4 make every effort to be sure of your calling and election. 5 For by doing this 6 you will never 7 stumble into sin. 8
1 tn The Greek text begins with “and,” a typical Semitism.
sn The reason given is all the provisions God has made for the believer, mentioned in vv. 3-4.
2 tn The participle is either means (“by making every effort”) or attendant circumstance (“make every effort”). Although it fits the normal contours of attendant circumstance participles, the semantics are different. Normally, attendant circumstance is used of an action that is a necessary prelude to the action of the main verb. But “making every effort” is what energizes the main verb here. Hence it is best taken as means. However, for the sake of smoothness the translation has rendered it as a command with the main verb translated as an infinitive. This is in accord with English idiom.
3 tn Or “moral excellence,” “virtue”; this is the same word used in v. 3 (“the one who has called us by his own glory and excellence”).
4 tn Grk “brothers,” but the Greek word may be used for “brothers and sisters” or “fellow Christians” as here (cf. BDAG 18 s.v. ἀδελφός 1., where considerable nonbiblical evidence for the plural ἀδελφοί [adelfoi] meaning “brothers and sisters” is cited).
5 tn Grk “make your calling and election sure.”
sn Make sure of your calling and election. The author is not saying that virtue and holiness produce salvation, but that virtue and holiness are the evidence of salvation.
6 tn Grk “these things.”
7 tn In Greek οὐ μή (ou mh) followed by the subjunctive is normally the strongest way to negate an action. Coupled with πότε (pote, “ever”), the statement is even more emphatic. The author is offering sage advice on how to grow in grace.
8 tn The words “into sin” are not in the Greek text, but the Greek word πταίω (ptaiw) is used in soteriological contexts for more than a mere hesitation or stumbling. BDAG 894 s.v. 2 suggests that here it means “be ruined, be lost,” referring to loss of salvation, while also acknowledging that the meaning “to make a mistake, go astray, sin” is plausible in this context. Alternatively, the idea of πταίω here could be that of “suffer misfortune” (so K. L. Schmidt, TDNT 6:884), as a result of sinning.
