Deuteronomy 9:16

9:16 When I looked, you had indeed sinned against the Lord your God and had cast for yourselves a metal calf; ¹  you had quickly turned aside from the way he ²  had commanded you!

Jude 1:17

Exhortation to the Faithful

1:17 But you, dear friends – recall the predictions ³  foretold by the apostles of our Lord Jesus Christ. ⁴ 

[9:16]  ¹ tn On the phrase “metal calf,” see note on the term “metal image” in v. 12.

[9:16]  ² tn Heb “the Lord.” See note on “he” in 9:3.

[1:17]  ³ tn Grk “words.” In conjunction with προεῖπον (proeipon), however, the meaning of the construction is that the apostles uttered prophecies.

[1:17]  ⁴ sn This verse parallels 2 Pet 3:2 both conceptually and in much of the verbiage. There is one important difference, however: In 2 Pet 3:2 the prophets and apostles speak; here, just the apostles speak. This makes good sense if Jude is using 2 Peter as his main source and is urging his readers to go back to the authoritative writings, both OT and now especially NT.