What is the secret of the ruins of alph

There are many secrets in the Ruins of Alph there are about 8 of them.
Words on the stone panels behind the trap door
#1: ESCAPE=use escape rope
#2: LIGHT=use the move flash
#3: WATER=use water stone
#4: HO-OH=have have Ho-oh in your party
Secret Messages
Message 1: Our clan engraved words in this place
Message 2: Our clan created Pokemon statue outside
Message 3: They possess power to sense with mind and reject outside
Message 4: We humans walk with them for their sake