What language did Saint Peter speak?

Saint Peter, an apostle of Jesus, lived in the 1st century AD in the region of Galilee, which was part of the Roman province of Judea.

Therefore, the language Saint Peter would have spoken would have been Aramaic, which was the common language of the region. He likely also knew Greek, which was widely used in the Roman Empire, especially in cities like Jerusalem.

It's worth noting that the New Testament itself is written in Koine Greek, the common Greek dialect spoken during that time.