1)
Why is this not written in Sefer Shmuel?
1.
'Rashi': It is written here for David's honor. He built a Mizbe'ach.
2)
What is the meaning of "va'Yizbach Sham"?
1.
Gra: Even though the Mishkan was in Giv'on, David offered there (in the place he bought from Arnan) constantly, for Hashem answered him the first time that he offered there.
