You have them confused with Mormons. JWs do not send teenagers on "missions" and do not call youth "elders".
Just as Catholiscim or Judaism . They simply make the treasure we have in us (bodies of death.) without effect. The old law of the fathers. . oral traditions of men
2 Corinthians 4:7 But we have this treasure in earthen vessels, that the excellency of the power may be of God, and not of us.
They went out from us because they are not of the us that Jesus defines. that shows faithlessness . The wrong manner of spirit. . . natural unredeemed mankind .