2 Peter 1:6

1:6 to knowledge, self-control; to self-control, perseverance; ¹  to perseverance, godliness;

2 Peter 3:18

3:18 But grow in the grace and knowledge ²  of our Lord and Savior Jesus Christ. To him be the honor both now and on ³  that eternal day. ⁴ 

[1:6]  ¹ tn Perhaps “steadfastness,” though that is somewhat archaic. A contemporary colloquial rendering would be “stick-to-it-iveness.”

[3:18]  ² tn The term “knowledge” (γνῶσις, gnwsis) used here is not the same as is found in 2 Pet 1:2, 3, 8; 2:20. This term is found in 1:5 and 1:6.

[3:18]  ³ tn Or “until.”

[3:18]  ⁴ tc ‡ The vast bulk of mss add ἀμήν (amhn, “amen”) at the end of this letter, as they do almost all the rest of the NT books (only Acts, James, and 3 John lack a majority of witnesses supporting a concluding ἀμήν). The omission in B 1241 1243 1739* 1881 2298 appears to be original, although the fact that some of the best and earliest Alexandrian witnesses (Ì⁷² א A C P Ψ 33 co), along with the Byzantine text and early versions (vg sy), add the particle renders such a judgment less than iron-clad. NA²⁷ places the word in brackets, indicating doubts as to its authenticity.