Did Jesus Joseph or Jacob say amen before his sermons?

In the New Testament, Jesus is often depicted as using the Word "amen," particularly at the beginning of his statements, which emphasizes the truth of his teachings. However, there is no record of Joseph or Jacob, as mentioned in The Bible, using "amen" in a similar context before their sermons. The use of "amen" as a form of affirmation or conclusion in religious discourse is primarily associated with Jesus and later Christian practices.