2 Corinthians 5:17 Therefore if any man be in Christ, he is a new creature: old things are passed away; behold, all things are become new.
An elderly lady I knew years ago used to quote this and say, "If you aren't a new creature, you better find out why not."
Being a new creature in Christ is a big deal. It means more than what we're often lead to believe in this era of Christianity when so many love to embrace the world and the old life.
In our natural way of thinking we make sense of things based on what our past experience has taught us - the environment we grew up in, the places we've lived, how we have interacted with people in various situations, how we have been treated ourselves, our family history (stories, traditions, legends), our culture, our religion, and our national tendencies. Many of these things have errors within them or are wrong altogether for one reason or another.
This is why becoming a new creature in Christ is so important. Old things are passed away, all things are become new.
In the word of God we now have a source of knowledge, wisdom, and judgment outside of our own limited ideas and viewpoint. We have a way to redefine the things of life more accurately - by God's standard.
We have the Holy Spirit indwelling us who will guide us into all truth if we follow His leading. Jesus Christ said, "Howbeit when he, the Spirit of truth, is come, he will guide you into all truth: for he shall not speak of himself; but whatsoever he shall hear, that shall he speak: and he will shew you things to come. He shall glorify me: for he shall receive of mine, and shall shew it unto you." John 16:13-14
We have a new family, a new and goodly heritage, and a new set of traditions and stories. We have more truth by which to live and the power to live through the Bible and the Holy Ghost.
Ephesians 1:5-12 Having predestinated us unto the adoption of children by Jesus Christ to himself, according to the good pleasure of his will, To the praise of the glory of his grace, wherein he hath made us accepted in the beloved. In whom we have redemption through his blood, the forgiveness of sins, according to the riches of his grace; Wherein he hath abounded toward us in all wisdom and prudence; Having made known unto us the mystery of his will, according to his good pleasure which he hath purposed in himself: That in the dispensation of the fulness of times he might gather together in one all things in Christ, both which are in heaven, and which are on earth; even in him: In whom also we have obtained an inheritance, being predestinated according to the purpose of him who worketh all things after the counsel of his own will: That we should be to the praise of his glory, who first trusted in Christ.
Speaking of the Israelites in the O.T. Paul wrote, "Now all these things happened unto them for ensamples: and they are written for our admonition, upon whom the ends of the world are come." 1 Corinthians 10:11 These are our stories now as well as Israel's. And because Abraham is our father in faith, we can call the godly ones our people, those who went before us. Galatians 3:7-8 Know ye therefore that they which are of faith, the same are the children of Abraham. And the scripture, foreseeing that God would justify the heathen through faith, preached before the gospel unto Abraham, saying, In thee shall all nations be blessed.
All the things that don't serve us in our walk with God and ministry to others we can now forget and leave behind as Paul did as well. Philippians 3:13-14 Brethren, I count not myself to have apprehended: but this one thing I do, forgetting those things which are behind, and reaching forth unto those things which are before, I press toward the mark for the prize of the high calling of God in Christ Jesus.
Becoming a new creature in Christ is a miracle. It is a complete change of focus and viewpoint, but it's also a completely different way to look at the world, others, and ourselves. Nothing is based on the nebulous and uncertain foundation of human experience any more. It is based on the foundation of Jesus Christ, the one and only true foundation worth building upon. It is a completely new way of living.
1 Corinthians 3:11 For other foundation can no man lay than that is laid, which is Jesus Christ.
Are you a new creature in Christ, friend? Are the old things passed away? Are all things made new?
If you are a believer, are you living like one? Can others see that you have left the old behind and are walking in newness of life?
We are not meant to be "the same but better." We are meant to be completely new in Christ - delivered and separated from the old life that was on the road to destruction.
2 Corinthians 9:15 Thanks be unto God for his unspeakable gift.