Works? Rewards? Crowns? Here's the plain truth…

How do Orthodox Jews look at God's forgiveness if there are no current sacrifices? Doesn't James 4:8 say we need to get closer to God? What's the truth about crowns and rewards in Heaven? What's happening with those scary verses in 2 Peter 2? Do they refer to loss of salvation? What should I do about my adult child who has rebelled? Doesn't 1 Corinthians 3 talk about loss of rewards (plural)?