I struggle with this too, especially since there's so many different versions of the Bible and so many religions... how do we know which one is the truth? So I've chosen to go by what I feel is real and I do feel that God is real, I can feel His presence and peace over me when I sing or listen to christian music and not other music gives me that feeling. I have seen God work in the lives of many, including countless times He has provided for me when I was at my lowest and even provides when I'm doing well. To me there's a massive difference between religion and the gospel. I don't follow the rules of religion, I follow the gospel and have faith. I have chosen to have a relationship with God because a very long time ago before any of us were created, God made a sacrifice so that EVERYONE (no matter who you are or what you've done) could be forgiven and offered the gift of eternal life in Heaven. I believe the gift of salvation is not something you have to earn or keep up by being good and it's not something God will take back, a gift is literally something that is given to you for free and only you can choose to accept that gift or not. So many people have a fair argument that if God created the world, why would He let bad things happen? I believe He did create all living things and gave us freewill with it. He doesn't control us like we're dolls, we live in a world full of sin so bad things will happen to everyone everywhere.. there's no way of escaping it until our souls leave our human bodies and goes to a perfect heaven where there is no sin, corruption or evil. Unfortunately there are a lot of people who chose not to accept the gift of eternal life and one day their soul will forever be trapped in a place much more wicked and painful than this world could ever be. A lot of people think it's silly to believe in something they can't see, but life here on earth honestly sucks enough as it is.. there has to be something after death and if hell is real, I don't want to risk going there FOREVER or being stuck in something inbetween. Besides I have lived several years of my life that is not pleasing to God and those were absolutely the worst years of my life. I accepted God's gift when I was younger but at one point I chose to walk away from my faith, I left God but He never left me. I feel the most comfort, peace and strength from within and all around me when I choose to be closer to Him. I still have my ups and downs with this (questioning everything) but the more effort I put into the relationship I have with God and the more I try to live a God pleasing lifestyle, the better I feel. It's really such a big difference. Now I'm not saying life as a christian is all sunshine and rainbows, in fact it may seem to have more struggles than a life without God because the enemy attacks those who are winning. The further away you are from the enemy the more they will try to tear you apart so you can be on thier level and the enemy especially loves those who are losing because there's a chance those who've lost everything won't try to get up and fight back and will forever be on their level. I just know from personal experience that the fight is worth living for and my eternal life after death is worth even more fighting for... the best part is, we actually won't even have to fight it (the devil himself) in the end.. God will handle that... but for now while we try to survive living in this world of sin God has equipped us with **The Armor of God** and **The Fruits of the Spirit**. I highly recommend looking into those tools, they're metaphors but have a lot of powerful meaning and guidance.
Anyways here's the key differences I have discovered, everyone is different but you can find communities of like minded people who share the same belief and can grow together, hold eachother accountable, worship and fellowship together, etc...
❌️❌️ Religion (man made): Salvation is earned by good works and can be lost if you don't keep it up, you must follow the rules. There's a whole list of things you can't do and a list of things you have to do in order to be a christian. I am uncertain if God will keep my spot in heaven, I may not be worthy/good enough for that. ❌️❌️
✅️✅️ Gospel (God made): Salvation is a gift given by God through grace. God's mercy covers me when I slip up and sin, I can enjoy the freedom of being forgiven and not have to worry about loosing my gift when I fail, once saved always saved. There are a lot of sins that tempt me and many times I will give into sin but I will try my best everyday to fight the temptations and live a Godly lifestyle because I want to, NOT because I have to. That is the power of His grace, mercy, forgiveness and my freewill. I have respect for God The Creator and I don't want to hurt the relationship I have with Him, it is worth spending my life on earth serving Him since He has given me assurance of eternal life in heaven. I am certain there is a place in heaven for me, no matter what. ✅️✅️