Symeon [i.e., Peter] reported how God first sent [someone to preach] to the Gentiles in order to reach a group of them [with the Gospel message] for His name.
[This letter is being written by] Simon Peter, a slave and apostle of Jesus Christ, to those who have received a faith just as precious as ours, through the righteousness of our God and Savior Jesus Christ.
It was through Jesus, and for His name’s sake, that we [i.e., I] received God’s favor to become an apostle, in order to bring about obedience based on faith from among people of all nations.
Now there was a righteous and devoted man named Simeon at Jerusalem, who was expecting the consolation of the Israelites [i.e., the coming of the Messiah to save them], and the Holy Spirit was upon him.