Have you ever said Good Morning to someone, only to have them reply suspiciously; what do you mean by that? Whenever it happens, it is always a good laugh.
On the other hand, when engaging someone in a conversation about spiritual things, people often respond; I am a Christian. This would be a good time to ask seriously; what do you mean by that, what do you mean when you say; I am a Christian?
Regardless their response to the question, a follow up for the believer can be; This is what I mean when I say, I claim to be a Christian:
I am a poor lost sinner who deserves hell. There is nothing I can do to make my heart clean. I am trusting Jesus Christ as my only hope of salvation and you can hold me accountable to anything the Bible says. Is this what you mean when you say; I am a Christian?
Anyone can say; I believe (the demons believe and tremble). Few are willing to be held accountable.
Note: The evidence of salvation, not the cause of it, is obedience to the Word of God. What is lacking today in those who profess to be Christians is confidence in and obedience to the Bible.
……let the word of Christ dwell in you richly…….