In a nutshell, within universalism, is the belief that Christ’s sacrifice atones for all people, regardless of whether or not they believe in him.
Of course, that’s not biblical Christianity.
I didn’t get Stu saying anything other than if all men go to heaven regardless then why the sacrifice of Christ on the cross if we’re all just meeting up later anyway.
What is the/your biblical Christian belief on Christ's sacrifice per individual? How is it supported ?
I’m not sure if you’re referring to universalism, but if you are, you’re misrepresenting universalism.
I don't think Stu was referencing Universalism, but here gives a more complete view of the Universalism religion:
In his Plain Guide to Universalism, the universalist Thomas Wittemore wrote,
"The sentiment by which Universalists are distinguished,
is this: that at last every individual of the human race shall become holy and happy.
This does not comprise the whole of their faith, but, merely that feature of it which is peculiar to them and by which they are distinguished from the rest of the world."
The remaining central beliefs of Christian universalism are compatible with Christianity in general:
God is the loving Parent of all people, see Love of God.
Jesus Christ reveals the nature and character of God and is the spiritual leader of humankind, see New Covenant.
Humankind is created with an immortal soul which death does not end—or a mortal soul that shall be resurrected and/or preserved by God—and which God will not wholly destroy.
Sin has negative consequences for the sinner either in this life or the afterlife. All of God's punishments for sin are corrective and remedial.
In 1899 the Universalist General Convention, later called the Universalist Church of America, adopted the Five Principles: the belief in God, belief in Jesus Christ, the immortality of the human soul, that sinful actions have consequence, and . universal reconciliation
The inclusion of theosis as a sixth point is found in the statement of faith adopted in 2007 by the Christian Universalist Association. In the context of Christian universalism, theosis— which can be translated as divinization or the process of being made more God-like—means to be made more Christ-like, or that all souls will ultimately be reconciled and conformed to the image of the glorified resurrected Christ.
"Plain Guide to Universalism Chapter 2, Paragraph 1".
Trust the past to God’s mercy, the present to God’s love, and the future to God’s providence. -St Augustine