1 So when we could endure it no longer, we decided to remain behind in Athens alone;
1 Thessalonians 3:1 Cross References - WNT
Acts 17:15
15 Those who were caring for Paul's safety went with him as far as Athens, and then left him, taking a message from him to Silas and Timothy, asking them to join him as speedily as possible.
2 Corinthians 2:13
13 yet, obtaining no relief for my spirit because I did not find our brother Titus, I bade them farewell and went on into Macedonia.
2 Corinthians 11:29-30
1 Thessalonians 2:17
17 But we, brethren, having been for a short time separated from you in bodily presence, though not in heart, endeavoured all the more earnestly, with intense longing, to see you face to face.
1 Thessalonians 3:5
5 For this reason I also, when I could no longer endure the uncertainty, sent to know the condition of your faith, lest perchance the Tempter might have tempted you and our labour have been lost.