What Does “Fiat” Mean in the Bible?
Latin for “let it be done.” It is Mary’s answer to the angel: “May it be done to me according to your word.”
Where it appears in the Bible
Luke 1:38; Matthew 6:10
What the Bible says
Luke 1:38
And Mary said: Behold the handmaid of the Lord; be it done to me according to thy word. And the angel departed from her.
Matthew 6:10
Thy kingdom come. Thy will be done on earth as it is in heaven.
Douay-Rheims Bible (Challoner revision), public domain.
Source: Luke 1:38