One of the most complicated and challenging parts of discovering Christ is learning how to truly leave the past behind. And I’m not just talking about leaving behind specific habits or tendencies. I’m talking about the memories that still haunt you, the mistakes that still define you, the guilt you thought you gave to God but somehow picked back up again. Sometimes, even after we have started walking with Christ, the past still follows closely behind us—whispering, reminding, and convincing us that we can never become more than who we used to be. We often think the hardest part of leaving the past behind is simply walking away from certain habits, tendencies, or sins. But that’s not the hardest part. The hardest part is living with lies about ourselves for so long that they stop sounding like lies, and start becoming synonymous with who we believe we are.
Sometimes, the hardest part of leaving the past behind isn’t letting go of what happened—it’s learning to trust what comes next. When you’ve spent enough time in disappointment, failure, or pain, you can become so familiar with the past that the future starts to feel strange and even terrifying. You know what you’ve already survived, but you don’t know what waits ahead. So even when God opens a new door, part of you hesitates to walk through it.
And sometimes, that hesitation isn’t because we don’t want to move forward—it’s because we’ve become so accustomed to who we were that we’re afraid to discover who we could become. We carry the old version of ourselves with us, convinced that it’s the only version we’ll ever be. So when we try to push forward, we find ourselves not just fighting against old habits, but fighting against ourselves—against our own identity, against a false image that we just can’t seem to shake.
But the truth is, we were never meant to carry the weight of the past into every step of the future. Christ calls us forward, not backward. And Scripture reminds us that in Him, the old does not have the final word. There is a newness waiting for us on the other side of what we are finally willing to leave behind:
“Forget the former things; do not dwell on the past. See, I am doing a new thing!” — Isaiah 43:18–19
Another challenge, which I think may be surprising to some, is discovering that God can take you somewhere your past cannot follow. I’m not just talking about knowing, in the logical space of your mind, that Christ can take you there, I’m talking about actually believing that He can take you further than you ever imagined, further than your failures, further than your fears, and further than the limits you’ve placed on yourself.
And I’m not talking about the kind of belief that simply sits in your head and sounds good in a sermon. I’m talking about the kind of belief that gets into your heart, changes the way you see yourself, changes the way you see God, and eventually changes the way you walk with him.
Because when you really believe that God has something ahead of you, you stop letting what’s behind you dictate where you’re going.
“Therefore, if anyone is in Christ, he is a new creation; old things have passed away; behold, all things have become new.” — 2 Corinthians 5:17 (NKJV)
What’s even more complicated—and perhaps more challenging—is learning how to leave the past of others behind them. For some reason, we often find it easier to give ourselves grace than to extend that same grace to someone else. We remember their mistakes long after they’ve repented, we hold onto the version of them that hurt us, and sometimes we refuse to let them become the person God is calling them to be.
But if Christ has the power to make you new, He has the power to make them new too.
Maybe leaving the past behind isn’t only about letting go of what happened to us. Maybe it’s also about giving someone else the freedom to become who they are, no longer trapped by who they used to be. Therefore, hold on to hope, and then have the courage to extend that same hope to others. Because if God is not finished with you, He is not finished with them either. Their past may be part of their story, but it does not have to be the end of it—just as our past does not have to be the end of ours.