(i) Flock

(ii) Two hebrew words used...

(1) Tsown (6629) - to migrate - move together to distant land.

(2) Eder (5739) - arrangement of animals - assembling of one unit.

(iii) Lay People (The Church)

(1) Moving together in unity.

(2) Assembled in His order (under the head)

(iv) (1) (a) 1:7,8

(b) Ps 23

(2) (a) 4:1, 2; 6:5,6