Romans 2:2

And we know that the judgment of God is according to truth against them that practice such things.

In this verse, as in the preceding, it is the CONDUCT of people which is condemned, a fact reiterated throughout this section. Paul was not speaking of "moralists," either Jewish or Christian, but of bold and arrogant sinners. Paul's "we know" was his method of stating an axiom of truth relative to God, namely, that God's judgments are righteous, and according to truth itself; and therefore God's judgments, especially his condemnation of gross sinners, derive from the abhorrent character of their deeds, and will not be averted by any claimed exemptions on their part.

According to truth ... Here is the second proposition of ten principles in God's judgment of man. It will be "according to truth," that is, according to what God's word in the Bible teaches, for this is a plain reference to the Sacred Scriptures which will form the grounds of man's eternal judgment in the last day. Such passages as "Thy word is truth" (John 17:17), etc., show this is true. Also, Christ said,

He that rejecteth me, and receiveth not my sayings, hath one that judgeth him: the word that I spake, the same shall judge him in the last day (John 12:48).