From Paul, called by God's will to be an apostle of Jesus Christ, and from Sosthenes our brother.
References for 1 Corinthians 1:1
To God's church that is in Corinth: To those who have been made holy to God in Christ Jesus, who are called to be God's people. Together with all those who call upon the name of our Lord Jesus Christ in every place— he's their Lord and ours!
Grace to you and peace from God our Father and the Lord Jesus Christ.