1. Summarizing witness testimony: The final statement of a witness is a summary and arrangement of his previous testimony, which is helpful for the court and jury to better understand the content and significance of witness testimony.
2. Strengthen witness testimony: The final statement of the witness can strengthen the testimony of the witness, make him express his views and opinions more clearly and accurately, and strengthen the effect of the hearing.
3. Defend your testimony: The witness's final statement is also an opportunity to defend his testimony, which can supplement the missing or incomplete contents in the previous testimony and answer questions from other witnesses or lawyers.
4. Affect the outcome of the case: The witness's final statement has an impact on the outcome of the case in some cases, especially when the jury decides the outcome of the case.