Why is it that those who argue against the simplicity of obtaining righteousness never tend to strive against the simplicity of obtaining unrighteousness!
Have a look at these two verses in Romans 5.
Rom 5:12 Wherefore, as by one man sin entered into the world, and death by sin; and so death passed upon all men, for that all have sinned:
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Rom 5:19 For as by one man's disobedience many were made sinners, so by the obedience of one shall many be made righteous.
There are many people who are fully convinced of our guilt before God because of the sin of ONE man which was imputed to all of us and declared us to be sinners and guilty before God. But I find it interesting that there are very few people who are fully convinced of our justification before God because of the righteousness of ONE man which was imputed to us who believe in Him who declares us to be righteous and innocent before God.
If by one man sin came into the world and death by sin, surely it stands to reason that by one man righteousness came into the world and life by righteousness.