Mars Hill Church has some good resources concerning the most asked questions about theology. Here is one on assurance of salvation.
This is a question that comes up frequently, particularly among fairly new Christians who are still working on understanding the Scriptures. First, the very fact that this situation is bothering you is evidence that you are part of God’s family and need not fear loss of your salvation. You cannot lose your salvation. Look up Romans 11:29 and memorize it.
If you’re concerned about the “unforgiveable sin,” be sure to see Pastor Mark’s explanation on the topic.
As for your referring to Hebrews 6:4-6 and Hebrews 10:26-31, let me say that these are two of the most hotly debated portions of Scripture among theologians more astute and experienced than most all of us. Our suggestion would be to try to acquire or borrow a copy of the ESV Study Bible and read the commentaries that it gives on those two portions of Scripture.
The Mars Hill position on those passages would be that they describe persons who fall into one of the first three soils that Jesus describes in Luke 8:4-15. When you read that parable and the meaning that Jesus himself provides, you will understand that many people can “taste” the blessings of God and sometimes even appear to be “born again,” but in time it is revealed that they never were the “good soil.” The Apostle John in 1 John 2:19 explains those of the first three soils by saying, “They went out from us, but they were not really of us, for if they had been of us, they would have remained with us; but they went out, so that it would be shown that they are not of us.”
The very fact that being one who does not remain is bothersome to you, reveals that you are saved. You want to remain in the body. Therefore, be assured and secure in your salvation. Check out the document, Assurance Scriptures, and rest in your own assurance. When you have time, turn in your Bible to 1 John 5 and then download and print this document. You will see that you can already identify with at least some of the evidences of your being a part of God’s family. As you mature in your faith, more and more of those evidences will become part of your life. We call that process “sanctification.”
Instead of worrying about your salvation, you need to move on to why God saved you. Read Ephesians 2:8-10. Verse 10 will indicate to you that he saved you for a purpose. As a new believer, you need to figure out what your Spiritual Gifting is and how you can fulfill Ephesians 2:10. When you have time, go to the Mars Hill website for the six sermons that Pastor Mark preached on spiritual gifts. As you listen, you most likely will discover which gift or gifts that God has blessed you with. When you begin to minister to others with that or those gifts, you will experience the joy and assurance that our Lord Jesus wants you to have.
Satan would want to put doubt in your mind. Tell him to get lost in Jesus’ name, because he has no right to your life. He is the father of lies and he or his demons are lying to you to weaken your faith. Flee from him and serve the Lord Jesus because he is your head pastor and top authority.
ResourcesAm I Saved – Examine 1 John 5.rtf