YOU SAID:
Josiah will turn into Joshua but Joshua will not turn into Josiah
INTO JAPANESE
ヨシヤはヨシュアに変わるが、ヨシュアはヨシヤにはならない
BACK INTO ENGLISH
Josiah will turn into Joshua, but Joshua will not be Josiah
INTO JAPANESE
ヨシヤはヨシュアになりますが、ヨシュアはヨシヤにはなりません
BACK INTO ENGLISH
Joshua will be Joshua, but Joshua will not be Josiah
INTO JAPANESE
ヨシュアはヨシュアになりますが、ヨシュアはヨシヤにはなりません
BACK INTO ENGLISH
Joshua will be Joshua, but Joshua will not be Josiah
That didn't even make that much sense in English.