John Gill Commentary Ezekiel 33:4

"then whosoever heareth the sound of the trumpet, and taketh not warning, if the sword come, and take him away, his blood shall be upon his own head." — Ezekiel 33:4 (ASV)

Then whoever hears the sound of the trumpet, and takes no warning Does not mind the notice given him; is incredulous of the danger he is in, or negligent of providing for his safety; fancies it is an alarm, and nothing else; and imagines there is no real danger, or what is a mere trifle; or, that the enemy is at a great distance, and it is time enough to provide for his defence: if the sword comes and takes him away; those that kill with the sword, as the Targum, come suddenly on him, and take away his life, or carry him captive: his blood shall be upon his own head; the guilt of his slaughter, as the Targum; the sin will be his own; it must be brought in wilful murder; no blame can be laid upon any but himself; the watchman will be clear.