Romans 2:8-9 — But unto them that are contentious, and do not obey the truth, but obey unrighteousness, indignation and wrath,
Tribulation and anguish, upon every soul of man that doeth evil, of the Jew first, and also of the Gentile.
Contentious = those who create rivalry or factions, those who resist the will and way of God.
Obey = habitual course of conduct, yielding to and cooperating with unrighteousness, by impulse
Wrath = the feeling of God's anger.
Indignation = the manifestation of the feeling.
Tribulation = suffering
Anguish = shut up without the possibility of escape, distress.
So, wrath is God's attitude toward sin, indignation is His expression of that wrath. Tribulation is the result of His expression and anguish is the realization of what is taking place.
Soul = person
Because the gospel was to the Jew first, so are the consequences of unrighteousness. With greater privilege comes greater responsibility.
First = especially
What Paul is doing in these verses is establishing that God rewards the good. Soon he will show that there are no good to reward.