God alone is the Judge of "who is or is not a Christian". Never I like to sit on God's throne to make that judgment call.
I do agree that God is judge and that is why, when a man kills, steals, lies, cheats, etc I don’t determine what punishments are handed out; however, I do acknowledge that the individual has done wrong.
Judgement/discernment goes hand in hand with free will. As individuals, we are given that freedom to judge whether right or wrong. Of course there are punishments/rewards for judgement which God dictates, however, the freedom/free will to do those things are acceptable.
And reading the Bible judgement goes hand in hand with righteousness. Christians can judge/discern what is right and wrong. And when I say Christians, again, I refer to those who live like Christ—of which it’s possible to do through him.
On the topic of Gods children, I believe the Bible is clear that not everyone is God’s children. We are all His creation, but we aren’t all his children. Because if we were then we would resemble him in behavior, speech, and thought.
“For
whosoever shall do the will of my Father which is in heaven, the same is my brother, and sister, and mother.”
Matthew 12:50 KJV
“He that
committeth sin is of the devil; for the devil sinneth from the beginning. For this purpose the Son of God was manifested, that he might destroy the works of the devil.
Whosoever is born of God doth not commit sin; for his seed remaineth in him: and he cannot sin, because he is born of God.”
1 John 3:8-9 KJV
“Why do ye not understand my speech? even because ye cannot hear my word.
Ye are of your father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it.”
John 8:43-44 KJV
“Then said Jesus to those Jews which believed on him,
If ye continue in my word, then are ye my disciples indeed;”
John 8:31 KJV
There is a distinction between those of the world and those of God. If you are a child of God, you “do the will of my Father.” Those who not only hear, but do, are the disciples of Christ. There were people who believed on Jesus but it didn’t make them his followers. He didn’t recognize them as his followers either. But who he did recognize were those who continued (persist in an activity or process) in his word. What was his word? It was loving your neighbor, doing good to those who hurt you, not coming adultery — abstaining from evil.
Not fair to say "you are a sinner". On RF (rule 8) this is called "Ad Hominem Attack" and gets you an official warning.
The beauty in this is that I didn’t say “you”. Just by looking at the message you quoted it says, “it is far to say that
those who do no live by the word of God are not Christians but sinners and they need to repent”.
Please don’t miss read my comments. Miss-reading usually leads to poor judgement. And I’m sure you weren’t intending to do so.
*Something to note. God instructed the Israelites to wait for a Prophet who would come and teach them all things. And just in case a false prophet rose up, God have them a criteria of which to use and judge by. Check it out:
“I will raise them up a Prophet from among their brethren, like unto thee, and will put my words in his mouth; and he shall speak unto them all that I shall command him.
And it shall come to pass, that whosoever will not hearken unto my words which he shall speak in my name, I will require it of him.
But the prophet, which shall presume to speak a word in my name, which I have not commanded him to speak, or that shall speak in the name of other gods, even that prophet shall die.”
Deuteronomy 18:18-20 KJV
If false prophets existed back then, what if now. Didn’t Jesus warn us of them?
“
Beware of false prophets, which come to you in sheep's clothing, but inwardly they are ravening wolves. Ye shall know them by their fruits. Do men gather grapes of thorns, or figs of thistles?”
Matthew 7:15-16 KJV
“Behold, I will make them of the synagogue of Satan, which
say they are Jews, and are not, but do lie; behold, I will make them to come and worship before thy feet, and to know that I have loved thee.”
Revelation 3:9 KJV
“
Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are gone out into the world.”
1 John 4:1 KJV
Now that we are living in a world where deception is so prevalent, iniquity abounds the more; it would be wise to guard your hearts and minds against wolves in sheeps clothing. Judge people based on actions and words rather than on appearances. Just righteous judgement.
“They are waxen fat, they shine: yea, they overpass the deeds of the wicked:
they judge not the cause, the cause of the fatherless, yet they prosper;
and the right of the needy do they not judge. Shall I not visit for these things? saith the Lord: shall not my soul be avenged on such a nation as this?
The
prophets prophesy falsely, and the priests bear rule by their means; and my people love to have it so: and what will ye do in the end thereof?”
Jeremiah 5:28-29, 31 KJV
God is the only one who can dish out judgement for these people’s sins, however, if one is not able to judge between what is sin and not sin then they are at risk of being punished with these sinners.