| Clue | Source | Date |
|---|---|---|
| Vouches for the truth of | New York Times | 18 Apr 2023 |
| Affirms solemnly | Premier Sunday | 17 Jan 2021 |
| Guarantees | New York Times | 18 Oct 2020 |
| Affirms | LA Times Daily | 11 Apr 2020 |
| Affirms | The Washington Post | 11 Apr 2020 |
| Takes an oath regarding | Universal | 14 Mar 2020 |
| Guarantees | ||
| Certifies | ||
| Declares true | ||
| Demands from, as secrecy | ||
| Demands from, as secrecy | ||
| Avows |