'Groups' in the Bible

Jacob was greatly afraid and distressed; and he divided the people who were with him, and the flocks and herds and camels, into two camps;

Joab [David’s nephew] the son of Zeruiah and the servants of David also went out and met them by the pool of Gibeon. They sat down, with one group on one side of the pool and the other group on the other side of the pool.

(For there were about 5,000 men.) And He said to His disciples, “Have them sit down to eat in groups of about fifty each.”