Huntington writes, “Paul counts all things but dung that he may win Christ, and be found in Him; not having his own righteousness, which is of the law, but that which is through the faith of Christ; and tells us to walk by the same rule, and mind the same thing. You take this rule of Paul’s to be his pressing forward, or any of his attainments, it is answered, by faith he pressed forward, and by faith he attained; or else his pressing and attaining had been nothing but sin, for whatsoever is not of faith, according to Paul’s doctrine, is sin.
By faith Christ dwells in our hearts, and by faith we dwell in Him; and “in Christ Jesus neither circumcision aveileth anything, nor uncircumcision, but a new creature,” which is Christ formed within us: “and as many as walk according to this rule, peace be on them and mercy, and upon the Israel of God.” Faith is the rule of life according to the revealed will of God in Christ Jesus; “and this is the will of Him that sent me, that every one which seeth the Son, and believeth on Him, may have everlasting life, and I will raise him up at the last day.” (Jn. 5:40) Thus faith, appears to be the believer’s rule of life. according to the will of God in Christ Jesus; and the letter of the law is the bond-childrens’ rule of life; he that doth these things shall live in them. Let him do according to this rule and he shall live. The law is not the rule of believing, but of doing; the law is not of faith but of works, and the man that doth them shall live in them. (Gal. 3:12)
If to see the Son, and believe on Him, entitles us to everlasting life according to God’s will, then faith must be the rule of that life; and one would think that if “he that liveth and believeth shall never die,” faith must be a safe rule to live by.” [source]