False teachers twist this passage and falsely claim it says no one ever understands, no one ever seeks out God, we always turn aside from the will of God, and we never actually do good. This false claim is absurd on its face. People sometimes will to be saved, Romans 9:16. People sometimes seek God, Romans 9:30-33. The rich young ruler was seeking eternal life, but was unwilling to turn loose of his worldly treasure.
Not to put too fine a point on it, but does no one seeks after God equal no one ever seeks after God. If you believe they are equal, rather than no one seeks after God when sinning, the contextual meaning, not much more I can say.
Remember, a lot of these same people also believe that a person is born again before they come to faith, which I disagree with. Whether or not we come to faith from God or not, it's not from being born again. Being born again is always the result of faith. They see it as an all or nothing, since they don't distinguish the Holy Spirit's indwelling in the NT, and the Holy Spirit being upon a believer in the OT. Nor do they consider the power in God's Word, God's drawing people, etc.. For them, it's born again or the flesh. So, naturally, the colored glasses that they read into that passage in Romans with will dictate how they understand it.
There's a bigger picture, that's what I'm trying to find. It's got to fit with all Scripture. I still haven't dismissed the idea that man needs God to come to faith. I just disagree that man must be born again to come to faith. We have the Holy Spirit coming upon a person in the OT. That may parallel the pre faith drawing necessary to bring a person to faith in the NT. We'll see how things play out. Even Jesus , being the Word said this, which I find very revealing. This is still OT. The NT officially began to be declared at Pentecost, the light....
John 12:24-36 The people answered Him, "We have heard from the law that the Christ remains forever; and how can You say, 'The Son of Man must be lifted up'? Who is this Son of Man?" Then Jesus said to them, "A little while longer the light is with you. Walk while you have the light, lest darkness overtake you; he who walks in darkness does not know where he is going. While you have the light, believe in the light, that you may become sons of light." These things Jesus spoke, and departed, and was hidden from them.
Remember Van, the New Testament doesn't begin until the cross (Hebrews 9:16). WE call Matthew, Mark, Luke and John the New Testament/Covenant, but in reality, all of them are still Old Testament/Covenant up until each records Jesus' death on the cross. Failure to recognize this will ultimately cause all kinds of error.