  Recently we have performed large-scale average magnetization studies of the
Ising model for the square, honeycomb, triangular, and simple cubic lattice. We
want to complement those studies with the structurally more complicated
body-centered cubic lattice Ising model in this paper. We have relevantly
calculated the order parameter or average magnetization expression for the
body-centered cubic Ising lattice based on the recently developed
interrelation, given by $\langle\sigma_{0, i}\rangle=
\langle\tanh[K(\sigma_{1,i}+\sigma_{2,i}+\dots +\sigma_{z,i})+H]\rangle$. We
will use the same conjectures for the odd spins correlation functions as in our
previous works. The mathematical forms of the odd spin correlation functions
will be eventually elucidated by some physical discussions. We have seen that
the obtained average magnetization expression with the numerical data for the
body-centered cubic lattice Ising model is in good agreement.
