To be under sin means
to be under a power that binds man to mortality and renders useless any concern to do God’s will; or
to be under God’s righteous condemnation.
When Paul says that all are under sin, he means that all humans are under the power and control of a force inside them, which causes them to act wickedly, ignore God’s will, and seek their own fleshly desires. We can detect that this is what Paul means because elsewhere Paul describes the power of sin as a master over its slave (Romans 6:12–23). Further, sin
in Romans 3:9 is in the accusative case, and follows the preposition under.
When the object of the preposition under
is in the accusative case, the preposition has to do with being under power or control. Finally, we know what sin is because Paul has explained sin in Romans 1:18–2:29 when he says humans are wicked, unrighteous, unholy, and so on. So humans are under the control of something internal that makes them wicked, unrighteous, and unholy.
Some contend that when Paul says we are all under sin, he means that we are all under the condemnation of God. These suggest that when we consider the context of Romans 1:18–2:29 it is clear that all are under God’s condemnation as the righteous judge. Now Paul says that all are under sin. In other words, Paul is summarizing what he has explained in Romans 1:18–2:29 by saying that all are under God’s condemnation in the sense that all are under sin.
The problem with this argument is that it mixes up what Paul says with what he implies. For he does not say that all are under God’s condemnation. Rather, he says that all are under sin. Of course, that all are under sin means that all act wickedly, so this implies that all who are under sin are under God’s condemnation. Still, Paul does not say that all are under condemnation, but he only implies this by saying all are under sin.
Thus, when Paul says that all are under sin, he means that all are under the power and control of something inside them that makes them act wickedly and ignore God’s will.
Interpretation 1:
To be under sin is to be under a power that binds man to mortality and renders useless any concern to do God’s will.
Summary:
Paul explains that both Jews and Gentiles are under sin. To be under sin is to be bound by the power of sin as a slave to its master. This power binds humans to ignore God and his will, and to prioritize earthly selfish pleasures.
It is difficult to recognize the power of sin over us, for one aspect of sin is that it lies to us. Sin tells us that we are healthy when we are sick, and that we do not need God, when God is our only purpose and salvation. We must recognize that we are under sin, and humble ourselves before God, pleading for his mercy to renew us.
Advocates:
James Dunn
Leon Morris
Frank Thielman
Minor differences:
Our authors agree that Paul treats sin as a sort of power that binds every human.
Leon Morris says that Paul uses legal language when he says all are under sin, and that all are under the dominion of sin.1
Frank Thielman seems to generally agree, pointing out that we are under sin in the way a soldier is under a military commander.2 To be under sin is to be under its authority.
Of our three authors, James Dunn is the most specific. Dunn contends that Paul personifies sin as a kind of force in the world, which functions in and upon man. In fact, sin is the most negative and dangerous force in human experience. Dunn goes on to explain that sin has the power to bind one to mortality and render knowledge of God useless.3 So to be under the power of sin is to be bound to mortality and enmity with God.
Arguments
Possible weaknesses
Interpretation 2:
To be under sin is to be under God’s righteous condemnation.
Summary:
God is the righteous judge who is perfect and holy, which means that sinners are under his condemnation. Paul explains that both Jews and Gentiles are under sin, which means both Jews and Gentiles are under God’s righteous condemnation.
Advocates:
Richard Longenecker
Douglas Moo
Minor differences:
Our authors seem to agree that to be under sin is to be under God’s condemnation.
Richard Longenecker writes that to be under sin is a state of being under God’s righteous condemnation of sin.
7 Douglas Moo characterizes the same concept slightly differently, explaining that to be under sin is to be brought before the divine bar and found wanting.
8
Arguments
Possible weaknesses
9 What then? Are we Jews any better off? No, not at all. For we have already charged that all, both Jews and Greeks, are under sin,