In 1 Chronicles 21:29, the tabernacle was at Gibeon — explaining why Zadok priests served there.

1 Chronicles 24:3 records David distributing priestly duties, including Zadok, who is the priest serving at Gibeon here.

1 Kings 3:4 describes Solomon sacrificing at Gibeon, the same high place where Zadok ministered at the tabernacle.

2 Chronicles 1:4 explains why the tabernacle remained at Gibeon: the ark was in Jerusalem, separate from the Mosaic tabernacle.

2 Chronicles 1:13 shows Solomon returning from the Gibeon high place, confirming the tabernacle location here.

Numbers 18:2 gives the original command for priests and Levites to serve before the tabernacle, which Zadok and his brethren are doing here.