Testimony, Verbal Evidence
noun, verbal noun
Evidence that you say is testimony. You could also say you're providing verbal evidence. Hopefully you won't have to give too much of this in your lifetime.
しょうげん
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
全トーフグ社員が、コウイチがビエトのミートボールを食べるのを見たと証言しました。
All of the Tofugu workers testified that they had seen Koichi eat Viet's meatball.
マイケルだけは、コウイチに不利な証言はしたくないと言って、証言しませんでした。
Only Michael refused because he didn't want to testify against Koichi.
フグが先生のリンゴにフグ毒を付けたと疑われた時、クラスメート全員が彼はやってないと証言しました。
When Fugu allegedly put blowfish poison in the teacher's apple, all of his classmates testified that he did not do it.