Argument:  In this passage, St. John continues to speak of the meeting between John the Baptist and the Pharisees who were sent from Jerusalem to question him.  John tells them that the One he told them about earlier—the Word—is among them and that they shall soon see Him!  As we read, we will discuss the Substantives and Adjectives we find, to see our Grammar lessons in action.

²⁴ Et     qui   missi fuerant erant ex Pharisaeis.  ²⁵ Et interrogaverunt eum
And  those who  sent    were      were from the Pharisees.  And    they asked           him
et dixerunt     ei,   "Quid  ergo    baptizas  si tu non es Christus neque 
and  they said  to him,   "Why then   do you baptize if you not  are  Christ        nor          
Helias neque propheta?".  
Elijah      nor    the prophet?".

²⁶  Respondit   eis Iohannes dicens, "Ego baptizo in aqua   medius 
      Responds  to them   John        saying,     " I      baptize   in  water  in the midst  autem   vestrum stetit     quem  vos non scitis.  ²⁷  Ipse est qui post me however     of you   stood    one whom  you  not    do know.   He  it is  who after  me 
    venturus est qui  ante me factus est cuius  ego non sum dignus ut     
about to come is  who before me    made  is  of whom   I    not     am   worthy  that  
   solvam         eius corrigiam calciamenti."
I should loosen  of him  the strap   of the shoe.". 

²⁸  Haec     in Bethania facta sunt trans Iordanen ubi   erat Iohannes
These things  in   Bethany    done   are    across the Jordanwhere  was   John              baptizans.
baptizing.