Why are There no Chairs inside the Tabernacle?

Why are There no Chairs inside the Tabernacle? – “The Bible indicates that, for the priests serving in the tabernacle, there was no sitting on the job either. Consider the furnishings in the tabernacle. There was an altar, a large basin for washing, curtains, a table, an ark, and a lamp stand. Interestingly, there is no chair in the tabernacle.” Why not?