1. I agree, all Christians are under obligation to be a witness for Christ. However, does a Christian witness on the basis of God's influences to witness (which can be refused) or on the basis of a divine predetermination to witness, which he will not refuse because he cannot, seeing a submissive disposition to obedience was also predetermined?

2. Why is the call for men to repent "effectual to some" and not to all who hear it?

3. By the way, where does the Bible affirm this concept of God having a "hidden" will with reference to the salvation of men? What is that "hidden will". If hidden, how do you know there is such a will in God the first place?

Please understand, these questions are not given to affirm or deny Calvinism per se. I think the answers to these questions may show that all who believe in Calvinism are "hyper" (if it be insisted that only some are to be designated as such) because they all agree to the concept of "unconditional election", regardless of whatever other doctrinal disagreements they may have.