Galatians 3:17

3:17 What I am saying is this: The law that came four hundred thirty years later does not cancel a covenant previously ratified by God, ¹  so as to invalidate the promise.

Galatians 3:21

3:21 Is the law therefore opposed to the promises of God? ²  Absolutely not! For if a law had been given that was able to give life, then righteousness would certainly have come by the law. ³ 

[3:17]  ¹ tc Most mss (D F G I 0176 0278 Ï it sy) read “ratified by God in Christ” whereas the omission of “in Christ” is the reading in Ì⁴⁶ א A B C P Ψ 6 33 81 1175 1739 1881 2464 pc co. The shorter reading is strongly supported by the ms evidence, and it is probable that a copyist inserted the words as an interpretive gloss. However, this form of the “in Christ” expression is somewhat atypical in the corpus Paulinum (εἰς Χριστόν [ei" Criston] rather than ἐν Χριστῷ [en Cristw]), a fact which tempers one’s certainty about the shorter reading. Nevertheless, the expression is used more in Galatians than in any other of Paul’s letters (Gal 2:16; 3:24, 27), and may have been suggested by such texts to early copyists.

[3:21]  ² tc The reading τοῦ θεοῦ (tou qeou, “of God”) is well attested in א A C D (F G read θεοῦ without the article) Ψ 0278 33 1739 1881 Ï lat sy co. However, Ì⁴⁶ B d Ambst lack the words. Ì⁴⁶ and B perhaps should not to be given as much weight as they normally are, since the combination of these two witnesses often produces a secondary shorter reading against all others. In addition, one might expect that if the shorter reading were original other variants would have crept into the textual tradition early on. But 104 (a.d. 1087) virtually stands alone with the variant τοῦ Χριστοῦ (tou Cristou, “of Christ”). Nevertheless, if τοῦ θεοῦ were not part of the original text, it is the kind of variant that would be expected to show up early and often, especially in light of Paul’s usage elsewhere (Rom 4:20; 2 Cor 1:20). A slight preference should be given to the τοῦ θεοῦ over the omission. NA²⁷ rightly places the words in brackets, indicating doubts as to their authenticity.

[3:21]  ³ tn Or “have been based on the law.”