And when Silas and Timotheus ... - They came to Paul according to the request which he had sent by the brethren who accompanied him from Thessalonica, Acts 17:15.
Paul was pressed - Was urged; was borne away by an unusual impulse. It was deeply impressed on him as his duty.
In spirit - In his mind; in his feelings. His love to Christ was so great, and his conviction of the truth so strong, that he labored to make known to them the truth that Jesus Was the Messiah.
That Jesus was Christ - That Jesus of Nazareth was the Messiah. Compare Acts 17:16. The presence of Silas and Timothy animated him; and the certainty of aid in his work urged him to zeal in making known the Saviour.