When a Christian tells you that you need Jesus or else you'll burn in hell, they aren't threatening you. Is the mailman billing you when he delivers an invoice? Of course not. He's the deliverer of the news. You are wrong to be angry at the person delivering the message, and you're wrong to be angry at the person who sent you the message, because that person is God Himself. Every single human being has an appointed day to die, and every single human being has a judgment. The default is to be judged at the Great White Throne where God the Father will judge you for your sins and tell you to depart into everlasting contempt into the lake of fire made for the devil and his angels. Meanwhile, those who trust on Jesus and give Him faith receive salvation, which allows them to receive their judgment at the Mercy Seat of Christ. It is here that your sins will be cleansed, both your good works and bad works are tried by the same fire, and that which was good in your life is refined like silver, whereas that which was wicked burns up like hay and stubble. Instead of YOU burning for your sins, your sins burn away and leave you only with the good that you did. The Lord Jesus Christ absolves you of your sins through your faith alone.

This is a message that was settled in written form over 1900 years ago, and a message that God began to deliver over 4000 years ago if not longer. It is not your right nor wisdom to be angry with a Christian who teaches you about God's plan of salvation. You must acknowledge your sin and trust on Him to be your only chance of having that sin absolved. That's the Gospel. If you read this here and believe it, literally call on the Lord Jesus Christ with your mouth and you are saved, right there at your computer screen.

Bless you.