I am reading a book named "BHAGAVAD-GITA AS IT IS". I came across the below sentence:
I Offer my respectful obeisances unto him
Further I have consulted a dictionary for the meaning for unto and I learned its meaning is to. Is there any difference in meaning if I replace to with unto for all the places? Consider the following examples:
I am going from Chicago unto New York.
My rank was improved from 5 unto 3.
The new policy applicable from software engineers unto project managers.
Are the above sentences perfectly fine or not? Are there any usage limitations for both to and unto?