Since Arminians reject the doctrine of Limited Atonement, or Particular Redemption, or whatever else it's been labeled, they are forced into claiming that Christ's death for many souls is and will eternally be in vain.
I have heard this spoken, bluntly, from the pulpit, especially during the notorious atlar calls. "Jesus loves you. God gave His Son for you. The ball's in your court now. What are you going to do? Don't let His great love for you be in vain... ad nauseum."
After reading 1 Corinthians 12:1-3, that sounds suspiciously like, "Jesus is accursed." The law specifically claims that a man hung on a tree was accursed. Christ died, not for His own sins, but to redeem His people, from their sins and to avert the wrath of God that was their just reward for their vile and horrid rebellion against God. Jesus, Scripture tells us, died to "save His people from their sins." Nowhere in Scripture do we get even the remotest idea that Christ's death can be in vain or wasted effort in regard to anyone. He died for His sheep and His sheep alone. Jesus did not die for the goats.
Saying that Jesus' death could be in vain or that His sacrifice can be wasted is tantamount to saying, "Jesus is accursed." Pelagianism is truly from the bowels of hell.