Those six people

Suicides in the Bible:

Samson   - Judges 16:29,30

Saul and his armor bearer -  1 Samuel 31:4,5   ,  1 Chronicles 10:4,5

Ahithophel  - 2 Samuel 17:23

Zimri  - 1 Kings 16:18

Judas Iscariot -  Matt. 27:5   ,  Acts 1:18