Some say the "Kingdom of Heaven" refers to the a
physical/political kingdom on earth while the "Kingdom of God"
is the spiritual, coming reign of Christ. Arguments against the
two being the same often come down to hair splitting and
misinterpretation of verses. For example, the site listed above
relies on a single verse in an attempt to say they are
different. In Luke 17:21, Jesus says "the kingdom of God is
within you" (KJV). They then argue that since Matthew 11:12 says
the Kingdom of Heaven suffers violence and is taken by force
that the two cannot be the same (who can take the kingdom from
within you?). The site only addresses where the terms are used
interchangeably to blow them off by saying "they will be the
same in the future." However, it can be seen that Kingdom of
Heaven and the Kingdom of God refer to the same thing. "Kingdom
of Heaven" is found 31 times, only in the Gospel of Matthew.
"Kingdom of God" is found 62 times in ten books of the New
Testament (Matthew, Mark, Luke, John, Acts, Romans, 1