"The mosaic law was fulfilled in Jesus' death on the cross and his resurrection. There's no need for a priesthood to sacrifice animals for the sins of the people. The Jewish Law has passed away along with it's 613 separate rules."

Matthew 5:17-18 refutes this premise. Jesus said that not one jot or tittle shall come from the Law until earth and heaven pass, until all is fulfilled. Now we know that not all prophecy is fulfilled yet. We don't live in heaven, we're still in the sinful earth. Thus, the Mosaic Law still applies. It has not been "fulfilled" yet.

"The Evangelical Christian church doesn't get anything wrong when it comes spiritual truth."

Refuted already.

"You're wrong about hell. Soul death is a common heresy among the cults like the Jehovah's Witnesses. It's clear that people in hell are tormented forever."

Jehovah's Witnesses get just as much right as they get wrong so that they could be used as a strawman for anybody going against the church.

"(Luke 16:19-31 NIV)"

That's a parable, not a literal description of what happens when you die. We know this because hell/Gehenna comes after the Day of Resurrection, not right when you die. Moreover, the term for hell isn't Gehenna here. It's Hades, i.e. just death (this is what Jesus meant when he said to Peter that the Gates of Hades would not prevail against his church, that they will inherit eternal life).

I'm no Jehovah's Witness, but this article does good in refuting the presumption that Lazarus went to hell in Luke 16.

https://defendingjehovahswitnesses.blogspot.com/2013/08/luke-1619-31-parable-that-does-not.html