'Groups' in the Bible

According to the selection by lot, their inheritance shall be divided between the larger and the smaller groups.”

And He commanded them all to sit down by groups on the green grass.

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

For He Himself is our peace, who made both groups into one and broke down the barrier of the dividing wall,