'Groups' in the Bible

He sent them to Lebanon, ten thousand {every month}; the work groups were a month in Lebanon and two months at home; now Adoniram was over the forced labor.

A network of latticework on top of the pillars was inlaid with ornamental wreaths and chains, the top of each pillar containing seven groups of ornamental structures.

When Jezebel was killing the Lord's prophets, Obadiah took one hundred prophets and hid them in two caves in two groups of fifty. He also brought them food and water.)

Certainly my master is aware of what I did when Jezebel was killing the Lord's prophets. I hid one hundred of the Lord's prophets in two caves in two groups of fifty and I brought them food and water.