It is the core of the predicate and the center of all its complements.
It constitutes a unit of thought in the sentence when expressing the enunciative,wishful, interrogative and imperative attitude
of the one speaking.
By means of the endings, it expresses the grammatical person of the subject,synthetically joining the two immediate constituents
of prayer,subject and predicate.
It locates its meaning and that of the whole sentence in the present, the past or the Future.