Paul, and Silvanus, and Timotheus, unto the church of the Thessalonians in God our Father and the Lord Jesus Christ:
2 Thessalonians 1:1
"Paul identified himself twice as the author of this letter (1:1, 3:17). Silvanus (Silas), and Timothy, Paul’s co-laborer’s in founding the church, were present with him when he wrote.
Evidence, both within this letter and regarding vocabulary, style and doctrinal content, strongly supports Paul as the only possible author. The time of this writing was surely a few months after the first epistle, while Paul was still in Corinth with Silas and Timothy (1:1, Acts 18:5; in late A.D. 51 or early A.D. 52)."
2 Thessalonians 1:1
"Paul identified himself twice as the author of this letter (1:1, 3:17). Silvanus (Silas), and Timothy, Paul’s co-laborer’s in founding the church, were present with him when he wrote.
Evidence, both within this letter and regarding vocabulary, style and doctrinal content, strongly supports Paul as the only possible author. The time of this writing was surely a few months after the first epistle, while Paul was still in Corinth with Silas and Timothy (1:1, Acts 18:5; in late A.D. 51 or early A.D. 52)."