Commentaries:
Robertson's Word Pictures (NT)
In what words I preached it unto you (tini logoi euhggelisamhn umin). Almost certainly tiv (tini logoi, locative or instrumental, in or with) here is used like the relative ov as is common in papyri (Moulton, Prolegomena, p. 93f.; Robertson, Grammar, p. 737f.). Even so it is not clear whether the clause depends on gnwrizw like the other relatives, but most likely so.
If we hold it fast (ei katexete). Condition of first class. Paul assumes that they are holding it fast.
Except ye believed in vain (ektov ei mh eikh episteusate). For ektov ei mh see on I Corinthians 14:5. Condition of first class, unless in fact ye did believe to no purpose (eikh, old adverb, only in Paul in N.T.). Paul holds this peril over them in their temptation to deny the resurrection.
Other Robertson's Word Pictures (NT) entries containing 1 Corinthians 15:2:
1 Corinthians 1:18
1 Corinthians 11:2
1 Corinthians 14:5
1 Corinthians 15:3
1 Corinthians 15:12
Galatians 3:4
1 Timothy 5:19
2 Timothy 2:2
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