The phrase “reprobate mind” is found in Romans 1:28 in reference to those whom God has rejected as godless and wicked. They “suppress the truth by their wickedness,” and it is upon these people that the wrath of God rests (Romans 1:18). The Greek word translated “reprobate” in the New Testament is adokimos, which means literally “unapproved, that is, rejected; by implication, worthless (literally or morally).”
Paul describes two men named Jannes and Jambres as those who “resist the truth: men of corrupt minds, reprobate concerning the faith” (2 Timothy 3:8). Here the reprobation is regarding the resistance to the truth because of corrupt minds. In Titus, Paul also refers to those whose works are reprobate:
“They profess that they know God; but in works they deny him, being abominable, and disobedient, and unto every good work reprobate” (Titus 1:16).
Therefore, the reprobate mind is one that is corrupt and worthless.
As we can see in the verses above, people who are classified as having a reprobate mind have some knowledge of God and perhaps know of His commandments.
However, they live impure lives and have very little desire to please God.
Those who have reprobate minds live corrupt and selfish lives.
Sin is justified and acceptable to them.
The reprobates are those whom God has rejected and has left to their own devices.
We know what a reprobate is; a person that rejects the Light of Christ and chooses to follow the darkness, so that person falls under condemnation and disapproval by God.
They are godless and wicked people who suppress the truth by their wickedness (Romans 1:18). As a result, he gave them over to this reprobate and virtually worthless state of reasoning.
God Himself declares that at least some knowledge—a basic, foundational understanding—is available to virtually everyone. However, an interesting danger is revealed here. Note how this unfolds: “. . . because, although they knew God, they did not glorify Him as God, nor were thankful, but became futile in their thoughts, and their foolish hearts were darkened” (verse 21). These people knew God, just as the people addressed by Isaiah and Amos and in Hebrews had knowledge of God. Yet, they obviously did not honor God by conducting themselves according to what they knew of Him. They failed to put their knowledge into action, and instead, let their imaginations run wild and began worshipping things apart from what God had revealed of Himself. Their imaginings, Paul says, led them straight into idolatry. In other words, they did not hold fast to what God gave them.
Might we have a reprobate mind?
The good news is, truly converted followers of our Lord and Savior Jesus Christ do not have to worry about such a thing.