What does this mean in Japanese?

Question:

I'd like to know what the Kanji are and what they mean on these three shinai bags. I am not good with this kind of Kanji writing so I can't read it... T.T

Thank you for your help!

https://www.kendoshop.com/Eng/index.php?channel=view&cate=102104000&number=1004

https://www.kendoshop.com/Eng/index.php?channel=view&cate=102104000&number=1005

https://www.kendoshop.com/Eng/index.php?channel=view&cate=102104000&number=1003

Answer:

Don't worry. Very few Japanese can read it.

精 氣 神　vitality, energy, spirit
It's a concept called "the three treasure" in Taoism, which had a great influence on Japanese martial arts.

不求友無以成　Without friends, you can't success (accomplish anything).

進如溢退如潮　Go forward like a typhoon, step back like the ebb tides.