Does God Place Stumbling Blocks Before People?

In our weekly Bible studies at our church we have been dealing with the subject of evangelism. Particularly, we have been looking at excuses used by sinners to reject Jesus as their Lord and Savior. While gathering together the passages of Scripture to help our students evangelize self-righteous people (or "I'm a good person" person) I ran across the following passage:

Again, When a righteous man doth turn from his righteousness, and commit iniquity, and I lay a stumbling-block before him, he shall die: because thou hast not given him warning, he shall die in his sin, and his righteousness which he hath done shall not be remembered; but his blood will I require at thine hand. (Ezekiel 3:20)

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http://cvbibleteachingcenter.blogspo...before_18.html