The Most Common Sin … and the Hardest One to Overcome

The Most Common Sin … and the Hardest One to Overcome

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Lately I’ve been thinking about one sin in particular that is so widespread, I would go so far as to say that it is the most common sin.  It’s even pervasive among Christians!  I’m ashamed to say that there have been times in my life when I’ve fallen into this specific sin, barely realizing that I’ve been snagged by it.  It is the hardest sin to overcome because it’s so natural and comfortable for us.  Unfortunately, we simply don’t comprehend just how serious God considers this deadly sin in our lives.

Ready to learn which is the most common sin and the hardest to overcome?


Sounds harmless, right?  But it’s not harmless.  For non-Christians, this sin will literally keep them from ever receiving the gift of salvation through Jesus Christ.

“For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.”  John 3:16  (emphasis added)

Why is unbelief such an awful sin?

For Christians, unbelief sabotages our fellowship with God, impedes our fulfillment of His will and renders us useless to His Kingdom.  You may wonder how a Christian, who believes in Jesus, could actually continue to live in unbelief.  It does happen though!  Many Christians have no doubt that Jesus paid for our sins through His sacrificial death on the cross.  That’s not where their unbelief infiltrates.  No, their unbelief seeps in during the busy-ness and challenges of their daily lives.

Unbelief takes over the heart of a Christian who:

  • Doesn’t study Scripture, therefore is ignorant of what God’s Word says.
  • Knows what the Bible teaches but doesn’t agree with it.
  • Desires to run his or her own life and not submit to God’s will.
  • Experiences circumstances, pain or struggles that make them question whether God is really in control.
  • Doesn’t spend quiet time in prayer, nurturing their relationship with the Lord.

When we allow unbelief to edge its way into our lives, we cripple our potential to serve the Lord and further His Kingdom.  Unbelief is like calling God a liar.  If we read God’s Word and refuse to believe what it says, what does that tell God?

“I don’t agree with God, I think my way is better.”

“I know what the Bible says but I just don’t believe it.”

“I know God is real but I don’t see Him at work in my life.”

When we tell God that we don’t believe His Word we rob Him of the glory that belongs to Him.

Overcoming unbelief

I have good news!  Here is what God requires of us in order to overcome the debilitating infection of unbelief.

  • Study the Bible daily. We get to know God through His Word and our faith increases as we learn His truth.
  • Choose to believe. When we are at the crossroads of the world pulling us in one direction and the Holy Spirit leading us in the path of truth, we have a choice.
  • Obey God’s Word. This is the most important characteristic of true faith.  Jesus said, “Why do you call me Lord, Lord and not do what I say?” (Luke 6:46)

Now that we realize the seriousness of unbelief, will you join me in guarding our hearts against this common sin, choosing instead to stand firm in our faith?


Laurie Driesen About Laurie Driesen

Laurie Driesen is a writer, entrepreneur and business owner. Her passion is to encourage and strengthen people's faith by sharing the truth of God's Word through her writing. In her recently published book, Beyond Regret - Living Your Life Purpose in Spite of Past Choices, Laurie shares how God uses our mistakes and detours to lead us into His will and accomplish His true purpose for our lives. Check out her website for more.


  1. How true that is. Unbelief hardens hearts and keeps the truth from penetrating. Thanks for sharing!

  2. Laurie Driesen says:

    Good point Barbara – and we know how much God hates hard hearts!

  3. Linda Lijewski says:

    So, in order to guard against unbelief, we must stay in the Word and engage in our faith through daily prayer. Great post!!!

  4. Thanks for your comment – you summed it up in one sentence!

  5. This is so true, Laurie. We like to take things into our own hands instead of entrusting our lives to God. Thanks for sharing this reminder we need to walk daily with Him!

  6. Laurie Driesen says:

    Thanks Cynthia, this is such a big subject, I had a lot more to say but tried to keep it short. You are so right, it all boils down to not trusting God and wanting to take things in our own hands!

  7. Thank you, Cynthia. You’re right that it’s so easy to fall into these traps of taking over for ourselves instead of trusting Jesus.

  8. Oops! Too many people commenting! Thank you, Laurie!

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