'Necessary' in the Bible

And on the first day there is to be a holy meeting and on the seventh day a holy meeting; no sort of work may be done on those days but only to make ready what is necessary for everyone's food.

So let Bezalel and Oholiab get to work, with every wise-hearted man to whom the Lord has given wisdom and knowledge, to do whatever is necessary for the ordering of the holy place, as the Lord has given orders.

And he made the seven vessels for the lights, and all the necessary instruments for it, of gold.

The hangings for the open space, with the pillars and their bases, and the curtain for the doorway, and the cords and nails, and all the instruments necessary for the work of the House of the Tent of meeting;