1. You get to heaven based on "being a good person"
So many people still don't understand how our Father's grace works, and they think that a believer gets to heaven because of their lack of sin or their abundance of good deeds in this life. You see, we don't get to heaven based on works, but instead by our faith that Jesus died on the cross as a sacrifice for our sins knowing that we will all inevitably commit.
In Romans 10:9, we can read:
"Because, if you confess with your mouth that Jesus is Lord and believe in your heart that God raised him from the dead, you will be saved.”
And in Ephesians 2:8-9, we can also read:
"For by grace you have been saved through faith. And this is not your own doing; it is the gift of God, not a result of works, so that no one may boast."
So often you hear people who’ve given up on God because they’re never going to be a “good enough person” to get into heaven. Every person who was ever born and lived on Earth except for Jesus himself was born with what we call a “sin nature”, and this means we ALL sin. Not just people who don’t care or don’t believe in God, even believers who are truly saved commit sins. That’s why our God is so wonderful, because he forgives us! Once you are saved this does NOT mean that you’re not going to sin anymore. This means you’re going to try and change your ways to avoid sinning as much as you can, but the reason Jesus was crucified for us is because He knew we would sin, and He knew we would fail sometimes, so He was our sacrifice to God for what we’ve done and will continue to do.
We can read about that in Romans 3:23:
“For all have sinned and fall short of the glory of God.”
If you aren’t saved, don’t let anyone who is intimidate you or fool you into thinking they are perfect and don’t commit sins because they are a believer, we ALL sin, and we will never possibly be "good enough" to get into heaven. This is where Christianity is different than any other religion.
2. If God is so loving and forgiving, He will let me into Heaven when I die because I have been a good person, even if I didn’t believe in Him.
We read it in Ephesians, we are saved by faith and faith alone! God speaks to us through His Word in our Bibles, and our Bibles clearly tell us we have to believe in Him or our actions on Earth do not matter when we get to the gates of heaven.
We can read about this in John 3:3: "Jesus answered him, 'Truly, truly, I say to you, unless one is born again he cannot see the kingdom of God." When you hear the term "born again" this means that a person has turned from their sins and placed their faith in Christ dying for us, and they are "reborn" into God's family for eternity, which means even when they die physically on Earth they will live spiritually forever with God in His kingdom. For a person to do this, they have to know God. They have to pray to the Lord and ask for Him to come into their hearts. If you don't know God while you live, you don't get to live eternally with Him in His great kingdom.
3. Being a Christian means you have to follow a long list of rules.