Update books/43_John.tex

Amended John 3:15 & 16 to change "may" to "would" and "might" to "would", correcting Greek subjunctive reflection to adhere to modern English.

Authorized by William P. Welty 6 January 2013 12:53pm PST
Merge pull request #41 from isvbible/patch-30

Update books/43_John.tex