Others Do Not Know Our Inward Self, but We Know.

According to the apostle John, Christians are able to have confidence in their future: (John writing) "I write these things to you who believe in the name of the Son of God that you may know that you have eternal life." 
 
Luke recorded that there are those who call upon the Lord but are lost: (Jesus speaking) "Why do you call me 'Lord, Lord,' and not do what I tell you?"
 
Matthew wrote that there are those who believe they were acting in the name of Jesus who were not: (Jesus speaking) "On that day many will say to me, 'Lord, Lord, did we not prophesy in your name, and cast out demons in your name, and do many mighty works in your name?' And then will I declare to them, 'I never knew you; depart from me, you workers of lawlessness.'"
 
According to Matthew there are those in the kingdom who will be lost: (Jesus speaking) "… as the weeds are gathered and burned with fire, so will it be at the close of the age. The Son of Man will send his angels, and they will gather out of his kingdom all causes of sin and all law-breakers, and throw them into the fiery furnace, in that place there will be weeping and gnashing of teeth." 
 
To summarize: Confidence in one's salvation is possible; calling on the name of the Lord to no avail is possible; believing erroneously that we are acting in the name of Jesus is possible; being in the kingdom and being lost is possible. How can we correctly know that we have eternal life?
 
Jesus said "You are my friends if you do what I command you" and "This is my commandment, that you love one another as I have loved you."
 
The term "Command" is defined as: to give an order to direct with authority; an authoritative direction or instruction to do something; to have authority or jurisdiction over; control.
 
Apparently Jesus has the authority to issue commands we have no option but to obey. He does not allow any wiggle room. He said we are his friends if we do what he commands. He does not say if we try. Yoda, of Star Wars fame said "Do or not do, there is no try." Yoda correctly interprets Jesus' instruction to us. We are Jesus' friend if we do what he commands.
 
Mark wrote: "one of the scribes came up and heard them disputing with one another, and seeing that he answered them well, asked him, "Which commandment is the most important of all?" Jesus answered, "The most important is, 'Hear, O Israel: The Lord our God, the Lord is one. And you shall love the Lord your God with all your heart and with all your soul and with all your mind and with all your strength.' The second is this: 'You shall love your neighbor as yourself.' There is no other commandment greater than these." 
 
According to Jesus if we do not love the Lord our God with all our heart and with all our soul and with all our mind and with all our strength we are not his friend. Paul told Christians in Corinth that without love we are nothing more than a noisy gong or a clanging cymbal. 
 
We can do the right thing with the wrong motive and that makes us as a noisy gong or a clanging cymbal. We can know the truth of our salvation because we know whether or not we love or are just pretending. Others do not know our inward self but we know and that may be cause for a bit of apprehension.