Acts 18:6

6. Shook his raiment A symbolical action indicating that not even a particle of dust belonging to them should adhere to him; hence entire departure.

Your blood… heads The term blood here signifies penalty for the blood shed. (See note on Acts 20:26.) The reference is to Ezekiel 3:18, where Ezekiel is set as a spiritual watchman over the spiritual life of Israel. If any man were negligently left by Ezekiel unwarned he would die, but for the blood of his death Ezekiel should be answerable. As Paul had faithfully warned these Jews, their blood, the responsibility and penalty for their destruction, would rest upon themselves. Upon their heads, as being the object on which divine retribution would descend and rest.