Peter continues his speech to the Jews that he began in [Acts 1:15](../01/15.md).

## patriarch ##

This is a father, or one who lived a long time ago.

## oath ##

An "oath" is a solemn statement or declaration.

## swear an oath ##

When one swears an oath, he makes a serious statement that what he promises is true.

## brothers ##

This includes men and women.

## He foresaw ##

David foresaw and spoke of the Messiah.