The verse engraved on the back of the pendant is a good luck saying for travelers to reach their desired destination safe and sound. In addition engraved on the key is the combination of the letters R.A.H., taken from the 72 names that aid in this purpose.
This is the verse (Psalms119: 145) “I have called with my whole heart; answer me, O LORD; I will keep Thy statutes."
The teeth of the key form the letter "Peh" and the inner space of the PEH forms the letter BET. This is the form in which the letter appears in the Hebrew Bible. The reason for this being , that PEH, the divine speech creates the Briya (Creation) the Bet . The one who understands and experiences the cosmic language, navigates his life in accordance with the heavenly plan.