By the wall (διὰ τοῦ τείχους)

Rev., more accurately, through the wall, as is explained by 2 Corinthians 11:33. Either through the window of a house overhanging the wall, or through a window in the wall itself opening to houses on its inner side. Hackett says that he observed such windows in the wall at Damascus. On the mode of escape, compare Joshua 2:15; 1 Samuel 19:12.

Basket (σπυρίδι)

See on Matthew 14:20. In Paul's account of this adventure he uses σαργάνη, a plaited or braided basket of wicker-work; or, as some think, of ropes.

Acts 9:25 Parallel Commentaries

the disciples. Maundrell states that after visiting the place of vision, 'about half a mile distant from the city eastward,' they returned to the city, and 'were shown the gate where Paul was let down in a basket. This gate is at present walled up, by reason of its vicinity to the east gate, which renders it of little use.'

let.

Joshua 2:15 Then she let them down by a cord through the window: for her house was on the town wall, and she dwelled on the wall.

1 Samuel 19:11,12 Saul also sent messengers to David's house, to watch him, and to slay him in the morning: and Michal David's wife told him, saying...

2 Corinthians 11:33 And through a window in a basket was I let down by the wall, and escaped his hands.