Show up and Testify to

Show up verb - To come into view.

Testify to and show up are semantically related In some cases you can use "Testify to" instead a verb "Show up".

Testify to verb - To declare (something) to be true or genuine.

Show up and testify to are semantically related in passively exhibit something topic. Sometimes you can use "Show up" instead a verb "Testify to".