The Lord wants us to do well at the judgment bar so he tells us all about it so we will know how we will be judged. He gives us extensive detail in D&C 76 about just who will be saved in the celestial kingdom because he wants us to make sure we make it. He says that they will be valiant in the testimony of Jesus, as well as many other things that describe the people who will become part of the celestial kingdom. He tells us who will go to the Terrestrial kingdom, and that it will include those who are not valiant in the testimony of Jesus.
If we are not worthy to enter his house here on earth, do we think we will be worthy to enter his kingdom after this life? Can we be worthy to enter his kingdom in heaven and not be worthy to enter his house on the earth? Will he suddenly change his mind after we die? No, of course not.
I find myself deeply concerned when people want to spend time discussing what they need to do to get into heaven using the false teachings they found in "Believing Christ" or one of Brad Wilcox's writings or talks instead of appealing to the scriptures. The scriptures teach a very different message.
The Lord wants us to do well at the judgment bar, so he lays it all out for us. We like, like errant children, for some reason immediately start spiritualizing what he says away, no matter how plain our father is with us.
When we are listening to what God says about his own judgment then we are not taking judgement from God, we are leaving judgment in his hands. He said what he will do, and when we are submitting our will to that, having faith in his word, then we are leaving judgment with him.
The moment we start supplanting what God says about how we will be judged, we are taking judgment to ourselves, which is against his commandments.