Its about interpretaion as usual.
Those thet believe in universalisim and inclusivisim do so because of passages such as these:
"He who is not against me is for me." [Original]"for whoever is not against us is for us." (NIV) Gospel of Mark 9:40.
"Everyone who speaks a word against the Son of Man will be forgiven, but those who blaspheme against the Holy Spirit will not be forgiven." Luke 12:10.
- "He is patient with you, not wanting anyone to perish, but everyone to come to repentance." 2 Peter 3:9 (NIV)
- "That was the true Light which gives light to every man coming into the world." John 1:9 Similarly Titus 2:11 says, "The grace of God that brings salvation has appeared to all men."
- God loved the entire world and Jesus came to save it, not condemn it (John 3:16, 17.)
The parable of the sheep and the goats (Matthew 25:31-46) portrays the judgment of the nations as being based on each individual's compassion on others, not on their religious background. The blessings pronounced upon the poor in spirit, the meek, the merciful, the peacemakers, those hungering for righteousness, etc. (Matthew 5:3-10) can also be understood as applying without reference to religion. Similarly, James 1:27 says, "Pure and undefiled religion before God and the Father is this: to visit orphans and widows in their trouble, and to keep oneself unspotted from the world
and so forth