By being as humble as you have displayed in your question.
The barrier is ego. Humility is the antidote.
People get arrogant when they think they know it all -- including Christians who think that their interpretation of scripture is Truth.
We need to remain humble and hungry for God's answers.
Discuss scripture, yes! Ask questions. Listen to others. But follow the compass known as the Holy Spirit. Even if you trip yourself up by seeing the Holy Spirit poorly, simply pick yourself up and humbly do it again.
I have seen a lifetime of blessed miracles as powerful as Moses parting the sea. Yet I try to remain humble to keep learning the Lord's sweet answers. I don't always keep that humility, but when I'm reminded of this, I shake off the haughty cloth of this world. I keep learning. And there is so much to learn.
Take Noah's Flood, for example. I was recently promoting my new book, "The Bible's Hidden Wisdom: God's Reason for Noah's Flood." I made the comment on one forum that Noah's Flood was an act of Love.
One person replied with a question like, "Are you cracked?"
The more you study the Bible without preconceptions and church dogma, the simpler it all starts to be. I let her know that God created us in His image and likeness and He is not Homo sapiens. His children were not harmed in the Flood -- only the bodies they wore.
When you see the simplicities of the Holy Bible, then you become perpetually filled with the Holy Spirit and God is with you.
This is a rescue mission, not for the Homo sapiens species, but for the immortal children of God those bodies host.
Ego -- that which craves to be "first" -- is the barrier. Humility and love are the keys.