Below are all the times in 1 Corinthians Paul asks this question.

1. “Do you not know that you are the temple of God and that the Spirit of God dwells in you” (3.16)?
2. “Do you not know that a little leaven (sin) leavens the whole lump” (5.6)?
3. “Do you not know that the saints will judge the world” (6.2)?
4. “Do you not know that we shall judge angels” (6.3)?
5. “Do you not know that the unrighteous will not inherit the kingdom of God” (6.9)?
6. “Do you not know that your bodies are members of Christ” (6.15)?
7. “Do you not know that he who is joined to a harlot is one body with her” (6.16)?
8. “Do you not know that your body is the temple of the Holy Spirit who is in you” (6.19)?
9. “Do you not know that those who minister the holy things eat of the things of the temple” (9.13)?
10. “Do you not know that those who run in a race all run” (9.24)?