My dear Arjuna, only by undivided devotional service can I be understood as I am, standing before you, and can thus be seen directly. Only in this way can you enter into the mysteries of My understanding.
Simplified for Easy Understanding
My dear Arjuna, only by undivided loving service can I be understood as I am, standing before you, and can be seen directly. Only in this way can you enter into the mysteries of My understanding.
Formal:
My dear Arjuna, only by undivided devotional service can I be understood as I am, standing before you, and can thus be seen directly. Only in this way can you enter into the mysteries of My understanding.
Simple:
My dear Arjuna, only by undivided loving service can I be understood as I am, standing before you, and can be seen directly. Only in this way can you enter into the mysteries of My understanding.