Bezaleel and Aholiab Hold a Tabernacle Curtainby emmanuel_higgins

Exodus 36:10

And he coupled the five curtains one unto another: and the other five curtains he coupled one unto another.

The joining formed the covering as two distinct sets, five curtains coupled to one another and five curtains coupled to one another. The work was to be done with exactness and skill and wisdom and perfection, following precisely the pattern shown to Moses. That requirement stands as the standard for every kind of work performed in God's service.