Hello all,
Thank you in advance for sharing your thoughts and ideas on this question.
Can a person know that Christ is the true Son of God and died for the sins of mankind and yet not be saved?
Yes .... even demons know ...
Even Demons know who God/Jesus is.
1. Only One God Exists
Demons understand that there is only one God who has existence - the God of the Bible.
You believe that God is one; you do well. Even the demons believe - and shudder (James 2:19).
2. They Know The Identity Of Christ
They understand Jesus' true nature, yet they are not committed to Him.
saying, What have we to do with You, Jesus of Nazareth? Are You come to destroy us? I know You, who You are, the Holy One of God (Mark 1:24).
The demons realize that Jesus is the Son of God, and that He has authority over them.
3. They Know Their Fate
Demons know their eventual fate.
And behold, they cried out, saying, What have we to do with You, Son of God? Are You come here to torment us before the time? (Matthew 8:29).
They realize that judgment is coming for them - a judgment they cannot escape.
4. Submit To Authority Of Christ
Demons know Christ, and submit to His authority. When Christ commanded, the demons obeyed.
And the demons besought Him, saying, If You drive us out, send us away into the herd of swine. And He said unto them, Go. And they came out, and went into the swine: and behold, the whole herd rushed down the cliff into the sea, and perished in the waters (Matthew 8:31,32).
5. Demons Know Genuine Believers
Demons also know those who have truly believed in Christ.
And the evil spirit answered and said unto them, Jesus I know, and Paul I know, but who are you? (Acts 19:15).
6. Submit To Believers Under Christ's Authority
The disciples of Jesus were given power over demons.
Heal the sick, raise the dead, cleanse the lepers, drive out demons: freely you received, freely give (Matthew 10:8).
This power over the demons became manifest.
And the seventy returned with joy, saying, Lord, even the demons are subject unto us in Your name . . . [Jesus said] Nevertheless in this rejoice not, that the spirits are subject unto you; but rejoice that your names are written in heaven (Luke 10:17,20).
Demons have to submit to believers under the authority of Jesus.
Summary
Demons know their limitations. They understand that only one God exists and they must submit to Him. They also know who Jesus is, and they submit to His authority. Demons realize that they will eventually be judged. They also know the identity of genuine believers. Those who believe in Jesus have power over the demons and should not be frightened of them.