[2dly.] That whatever Christ did as
mediator, he did it for them whose mediator he was, or in whose stead
and for whose good he executed the office of a mediator before God. This
the Holy Ghost witnesseth, Rom. viii. 3,
4, “What the law could not do, in that it was wreak through the
flesh, God sending his own Son in the likeness of sinful flesh, and for
sin, condemned sin in the flesh, that the righteousness of the law might be
fulfilled in us;” because that we could not in that condition of weakness
whereinto we are cast by sin, come to God, and be freed from condemnation
by the law, God sent Christ as a mediator, to do and suffer whatever the
law required at our hands for that end and purpose, that we might not be
condemned, but accepted of God. It was all to this end, — “That the
righteousness of the law might be fulfilled in us;” that is, which the law
required of us, consisting in duties of obedience. This Christ performed
for us. This expression of the apostle, “God sending his own Son in the
likeness of sinful flesh, and for sin, condemned sin in the flesh;” if you
will add to it, that of Gal. iv. 4,
that he was so sent forth as that he was ὑπὸ
νόμον γενόμενος, “made under the law,” (that is, obnoxious to it, to
yield all the obedience that it doth require), comprises the whole of what
Christ did or suffered; and all this, the Holy Ghost tells us, was for us,
verse 4.