Every end marks a new beginning. Keep your spirits and determination unshaken, and you shall always walk the glory road. With courage, faith and great effort, you shall achieve everything you desire. I wish you a Happy New Year.

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Do we have to use 'shall'? Can't we use 'will' instead of 'shall'? What is the meaning of two 'shall's' here?

Shall and will are interchangeable. They mean the same thing in this context. Shall is a more old-fashioned word, but you may substitute will.

In this context, 'shall' and 'will' are both modal verbs that express future tense. They are often used interchangeably, but there is a slight difference in meaning. 'Shall' is typically used to indicate a strong intention or a sense of duty, while 'will' is generally used to express a simple prediction or willingness.

In the phrase "and you shall always walk the glory road," the word 'shall' adds a sense of determination and inevitability. It conveys that no matter what, you are destined to walk the glory road. It emphasizes that your success is not simply a matter of chance, but something you are committed to achieving.

The second 'shall' in the phrase "With courage, faith and great effort, you shall achieve everything you desire" is used in a similar way. It emphasizes that you have the power and determination to achieve your desires through your own actions and qualities.

However, it's important to note that the use of 'shall' has become less common in modern English, especially in informal or everyday conversation. In contemporary language, 'will' is more frequently used to express future tense. Both 'shall' and 'will' can be used interchangeably in most cases without significantly changing the meaning of the sentence.