If you invoke the parable of the watchman, then do you also believe a Christian is personally responsible for the sins (iniquity) of those that the Christian fails to preach (whose 'blood I will require at the watchman's hand')?
Or, is this a special enjunction placed upon Ezekiel as a prophet God in the narrowest sense of the title 'prophet'
I do not accept the Scripture of the Watchman as a parable. A parable is a "story" said in a way so as the simple minded people that we are can grasp the meaning.
However in Ezekiel 33:1 it is GOD who says that ........
"Again, the Word of the Lord came unto me saying.........".!
To answer your question, the context of Ezekiel 33:6 is that the people were going to be judged for their sin, but the watchman will be held responsible if he does not warn them. Ezekiel warned them..........the false prophets had lied to them. Ezekiel had done a good job and fulfilled his calling.
The responsiblity of the watchman is to warn the wicked that there is a judgment day coming. So YES........I have done exactly that my dear brother.
Does that then mean I am responsible for their sins???? NO!
Every man is responsible for his own sin. Todays preacher of Gods Word is not called or required to get results. SPREAD THE GOSPEL. It is then Gods job to save those that hear because romans 10:17 says.......
"Faith comes by the hearing and hearing by the Word of God".