all the congregation, &c. Only here in Leviticus, and once more in the Pentateuch (Exodus 12:3).
children. Hebrew sons.
holy. set apart. See note on Exodus 3:5.
I the LORD, &C. There are fifteen groups in this body of laws (Leviticus 19), seven ending with the longer formula, "I am the LORD your God" (23, 4, 10, 25, 31, 34, 36), and eight with the shorter formula "I am the LORD" (12, 14, 16, 18, 28, 30, 32, 37)