testify
🇺🇸
/ˈtestɪfaɪ/
🇬🇧
/ˈtestɪfaɪ/
to say what you saw or know, especially in court
The witness will testify about what happened that night.
to show that something is true
His success will testify that hard work pays off.
to speak about your faith in God
Many believers testify to their faith during church services.