“The Holy Spirit spoke the truth to your ancestors when he said through Isaiah the prophet:
“‘Go to this people and say,
“You will be ever hearing but never understanding;
you will be ever seeing but never perceiving.”
For this people’s heart has become calloused;
they hardly hear with their ears,
and they have closed their eyes.
Otherwise they might see with their eyes,
hear with their ears,
understand with their hearts
and turn, and I would heal them.’
It’s a scary thought, but we’re not above developing a hard heart or seared conscience (1 Timothy 4:2). When darkness seems light, and what is bad seems good (Isaiah 5:20). I think we’re there to a large extent in our society and world today, although it’s surely nothing new except in the forms it is taking. There does seem to be a sea change in terms of morality. A popular idea is that as long as it doesn’t hurt someone else, whatever one does is fine. But that fails to take into account the truth that sin harms us, and through that harm, ends up harming others. Of course nowadays sin is thought to be an outdated concept, just like good and evil. God is not in all our thoughts (Psalm 10:4), and that explains the condition we’re in.
Christians are not exempt. We’re told that we’re to hold on to faith and a good conscience, otherwise our faith might be shipwrecked (1 Timothy 1:19).
There is recovery of sight for the blind, and hearing for the deaf through Christ. He can open our eyes and ears, so that we might hear his voice and follow. And have a spiritual aptitude we can develop and grow in through the Spirit and the word. Christians need to show the way, and we do so in love for God and our neighbor, and in faithfulness to the gospel in our own lives, so that what we do and say can help others. As we are helped ourselves in and through Jesus.