Men send themselves to hell all by themselves.
Does God give eyes to see and ears to hear to all men, to know the things of God and turn from their sin toward the light of Christ?
Obviously not.
Those whom God has freely gifted with grace through faith in Christ will believe and be brought to repentance, believe and be saved. Those He doesn't so gift will continue to love their sins and pay accordingly.
Thus, we are left with the following truth from God to help our understanding...
And a stone of stumbling, and a rock of offence, even to them which stumble at the word, being disobedient: whereunto also they were appointed. But ye are a chosen generation, a royal priesthood, an holy nation, a peculiar people; that ye should shew forth the praises of him who hath called you out of darkness into his marvellous light; Which in time past were not a people, but are now the people of God: which had not obtained mercy, but now have obtained mercy." -- 1 Peter 2:7 "Unto you therefore which believe he is precious: but unto them which be disobedient, the stone which the builders disallowed, the same is made the head of the corner,
As Paul told us in Romans, some men are appointed to be vessels of His grace to display His mercy and others vessels of His wrath to display His justice.
Our job is not to question God by saying "why;" our job is to be grateful for His free gift of grace, and to preach the Gospel to all men, confident those whom God has called to Himself will respond in true faith.
In fact the OPC says this about those who deny the non-scriptural double-predestination, God pre-damns people idea of the followers of Calvin. Hence they condemn followers of Christ like Methodists/Pentecostals etc. here is a quote from the OrthodoPresbyterianC sitethe OPC with its double-predestination seems to willingly cause its cultists to plumb the depths of despair since they do not believe in repentence, then anyone who fails then is told by the OPC that they were never Christian.Arminianism is indeed a heresy,....
The Bible teaches that Christ did his atoning work on behalf of his elect people, and no others.....
Since the teachings of Arminianism are contrary to Scripture, they are manifestly false. They are serious perversions of the gospel of Jesus Christ.
Are Arminian preachers heretics? In a sense, yes,
Is Arminianism a damnable heresy? Yes.