Feedback on 1616 literature

Reading “The office of Christian Parents: The Ordering of Sonnes from Fourteene Yeare old and Upward”, was not only challenging for the eyes, but also was challenging to the mind. The grammar and spelling of this 1616 document was very different then how the English language is written to day. For example the (s)’s looked like (f)’s and pronounced just like an (s). And the written (v)’s looked like (u)’s. And there were extra words added in to the document like “libertie” which now is spelled with a (y) instead of (ie). Our grammar and language has been changed and altered so much from back then, and I think our language is easier to understand then theirs.