The teaching of trianitarian:
He is a Trinitarian, not Universalist.
Triniarian believe forgiveness and acceptance are the benefit of cross.All men are accepted by God and all sins are forgiven by God through the finishedwork of Christ. If a man believe this truth and reality , he will be able to enjoy and experience all these benefits of the forgiveness and acceptance from GOd. However, if a man is blind , do not know/believe and cannot see this reality,he will continue living in the lies that he believes as well as cannot enjoy and experience any benefit of forgiveness and acceptance from God.
Triniarian believe God has reconciled all men to himself through the Christ. This is the truth and objective reality. If a man believes in this truth and reality, he will be able to enjoy and experience all these benefits ,e.g.reconciliation with God. Howevever, if a men is blind as well as cannot see and do not know or believe the finished work of Jesus, he will still live in the lie that he believes, cannot experience and enjoy any benefit of reconciliation with God and still be in the state of alienating from God.
Triniarian does not believe that all men will saved in the final judgment. However, Trinitarian believe God will open his kingdom and allow all men to enter .But you still have the free-will ,choose not to ignore this love and grace from God and not entering in it.
The above links in the quotes will help you know about the teaching of trinitarian. Any comment about this teaching?