¹ tn Grk “each one’s.” Here “builder’s” is employed in the translation for clarity.

² tn In an attempt to clarify the referent, some translations add “of Christ” after “Day” (so TEV); others specify this as “judgment day” (NLT) or “the day of judgment” (CEV).

sn The Day refers to the Day of the Lord Jesus Christ (cf. 1:8; 5:5) when each Christian worker will appear before Christ for evaluation of his ministry. Paul’s constant motivation was to be pleasing to the Lord in that day (2 Cor 5:9-10) and receive his commendation (1 Cor 4:5).

³ tc ‡ αὐτό (auto) is found at this point in v. 13 in a number of significant witnesses, including A B C P 33 1739 al. But Ì⁴⁶ א D Ψ 0289 1881 Ï latt lack it. The pronoun could be a motivated reading, designed to intensify Paul’s statement. On the other hand, it could have been deleted because the article alone made the reference already clear. In this instance, the possibility of scribal addition seems more likely than scribal deletion, although a decision is difficult. NA²⁷ includes the word in brackets, indicating doubt as to its authenticity.

sn It is unclear whether the phrase it will be revealed by fire describes the Day (subject of the previous clause) or each one’s work (subject of the clause before that).

⁴ tn The translation “[will] be punished” is given here by BDAG 428 s.v. ζημιόω 2. But the next clause says “he will be delivered” and so “suffering loss” is more likely to refer to the destruction of the “work” by fire or the loss of the reward that could have been gained.