2 Timothy 4:10

for Demas forsook me, having loved this present world, and went to Thessalonica; Crescens to Galatia, Titus to Dalmatia.

Demas ... is mentioned only three times in the New Testament, the other references being Colossians 4:14 and Philemon 1:1:24. His having loved the present age stands in contrast with those who love the appearing of the Son of God; and any hope that some seem willing to express on his behalf seems very precarious at best. It is idle to speculate on what Demas did in Thessalonica, or on why he chose that destination instead of any other. With the persecution raging in Rome, his purpose might very well have been merely that of getting as far away as he could.

Crescens to Galatia ... The English Revised Version (1885) margin gives Gaul as an alternative reading here; and, if that is correct, Crescens' going there may have indicated that Paul on the trip to Spain which he very probably made between the first and second imprisonments, might also have established congregations in Gaul (in France). Nothing is known of this man except what is written here.

Titus to Dalmatia ... The absence of these friends and co-workers from Paul's side in Rome is mentioned as one of the reasons why he so needed the presence of Timothy. Significantly, only Demas was mentioned unfavorably; and thus it may be assumed that the others were all absent on legitimate business.