Now if Christ be preached that he rose from the dead, how say some among you that there is no resurrection of the dead?
if. See on.
1 Corinthians 15:4 And that he was buried, and that he rose again the third day according to the scriptures:
1 Corinthians 15:13-19 But if there be no resurrection of the dead, then is Christ not risen...
Acts 26:8 Why should it be thought a thing incredible with you, that God should raise the dead?
2 Thessalonians 2:17 Comfort your hearts, and establish you in every good word and work.