Would you be able to tell us how obedient one has to be to receive eternal life?
Certainly. When I began this study for myself, years ago, I began by searching out every place in Scripture that talks about salvation, or anything that is related to salvation: ie. forgiveness of sin, sanctification, justification, etc.
Then I looked at the context to see if it was talking about saving physically, or saving spiritually. I ignored the ones dealing with physical salvation, and of the spiritual salvation passages, I looked at what Scripture said leads to that salvation.
After listing them all, I grouped them into similar categories. In the end I grouped them down to four categories:
Belief
Repentance from sin
Confession of Jesus' as Lord
Immersion into water
All of these are listed in Scripture as leading to Salvation:
Believe - John 3:16, Rom 10:10, Mark 16:16 -
"For God so loved the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life."
Repentance - Acts 3:19 -
"Repent therefore and be converted, that your sins may be blotted out, so that times of refreshing may come from the presence of the Lord,..."
Confession - Rom 10:10 -
"For with the heart one believes unto righteousness, and with the mouth confession is made unto salvation."
Immersion - Mark 16:16 -
"He who believes and is baptized [immersed] will be saved; but he who does not believe will be condemned."
There are many more passages for each of these, these are just some examples.
Now, when there are multiple things in Scripture that say the same result comes from doing different things, we have choices in how we interpret those things. We can either:
1. Choose a doctrine that says, follow one of them and ignore all the others.
2. Say that each person can choose which one he/she wants to follow, and everyone is ok doing the one he/she thinks is right.
3. Combine all of them into one cohesive, all encompassing, doctrine.
The only one of these that is Biblically correct is #3. All must be merged. That being the case, leaving any of them out leaves you short of salvation.
If you believe but do nothing else, your faith is dead and worthless.
If you confess that Jesus is Lord but don't believe it, you lie.
If you believe and confess but don't repent, you don't remain lost because you remain living in sin.
If you are immersed but don't believe, you just get wet.
If you believe but are not immersed, you have not connected with the cleansing of the Spirit who takes action when we are buried with Christ (Rom 6:1-6, Col 2:11-14).