“But I have installed My king on Zion, My holy mountain!”
MIDRASH TEHILLIM
1.....(2.8) ...I have installed My king on Zion
...Anointed, or Melted, or Made great...
RASHI
1. But I have installed My king ...
Why have you gathered together? I have appointed this one for Me ...
RADAK
1. ...I have installed ...
...the word נסכתי connotes chieftainship and greatness
2. ...My king ...
The king that is Mine in that I have made him king;
3. ...on Zion, My holy mountain
...Zion was conquered by David..., therefore Zion with Jerusalem is called the City of David. And after he conquered it, the Philistines gathered together to fight against him.
Rabbi HIRSCH
1. nosachti (installed)
nacak (נָסַךְ)
“to cover”, “to pour out” a liquid over some thing;