NET

27 When the jailer woke up and saw the doors of the prison standing open, he drew his sword and was about to kill himself, because he assumed the prisoners had escaped.

Darby

27 And the jailor being awakened out of his sleep, and seeing the doors of the prison opened, having drawn a sword was going to kill himself, thinking the prisoners had fled.

KJV

27 And the keeper of the prison awaking out of his sleep, and seeing the prison doors open, he drew out his sword, and would have killed himself, supposing that the prisoners had been fled.

Strong's

27 And ^G1161 the keeper of the prison^G1200 awaking^G1096 out of his sleep^G1853, and^G2532 seeing^G1492 the prison^G5438 doors^G2374 open^G455, he drew out^G4685 his sword^G3162, and would^G3195 have killed^G337 himself^G1438, supposing^G3543 that the prisoners^G1198 had been fled^G1628.