Whosoever shall receive one of such children in my name, receiveth me: and whosoever shall receive me, receiveth not me, but him that sent me. (Mark 9)
They do not receive our witness today, even as their fathers did not receive our Lord's witness in His day.
And this is the condemnation, that light is come into the world, and men loved darkness rather than light, because their deeds were evil.
For every one that doeth evil hateth the light, neither cometh to the light, lest his deeds should be reproved. (John 3)
Unrighteous christian sinners do not believe Jesus lived altogether righteous as a man, because they do not believe any man in the flesh can do so, because they themselves love their own sinning more than doing righteousness at all times.
They don't mind idolizing His life as righteous, they just don't want to live it, and especially not hear it preached.
This sheds new light on the Scripture in John 3:
He that believeth on him is not condemned: but he that believeth not is condemned already, because he hath not believed in the name of the only begotten Son of God. (John 3)
Those who don't believe in being righteous as He was, nor in any believer being righteous as He is, do not believe He was righteous Himself, They only give lip serve to Him as having been righteous altogether.
Even as the Jews in Jesus day had made their own religion, and so rejected the man Jesus as the Christ, so do the unrighteous sinning christians of today make their own religion, and reject the righteous flesh and bones of Jesus as His saints.
Them that believe not the righteousness of Jesus' body, believe not the righteousness of the Head of the body.
Their unrighteous fathers did not come to the Light of Christ, lest their sinful deeds be reproved, neither do they come to His Light in His body.
If we say that we have fellowship with him, and walk in darkness, we lie, and do not the truth: But if we walk in the light, as he is in the light, we have fellowship one with another, and the blood of Jesus Christ his Son cleanseth us from all sin. (1 John 1)
Even as they hate the reproving Light, so they also hate the righteous walking in the Light: unrighteous Cain slew righteous Abel, the unrighteous jews slew righteous Jesus, and if they are given power, the unrighteous christians will slay His righteous saints today.
Why? Because, by twisting of Scripture and rejecting the witnesses of the truth, they justify themselves in their sinning as christians on earth.
But righteous living cannot be twisted away from the truth: they must either accept it and be reproved, or kill it and continue searing their conscience against the Spirit of grace.
The spirit of Cain and of antichrist will remain on earth in the children of disobedience that hate the true Light of God's righteousness, until our Lord returns again to take up His church into the air, and destroy the wicked gathered against Him and His people that do His righteousness and sin not:
These shall make war with the Lamb, and the Lamb shall overcome them: for he is Lord of lords, and King of kings: and they that are with him are called, and chosen, and faithful. (Rev 17)
Until that time, the beast makes war with the saints, to overcome them by seducing them to unrighteousness again,
For false Christs and false prophets shall rise, and shall shew signs and wonders, to seduce, if it were possible, even the elect. (Mark 13)
Or to kill them outright to do away with their own reproof:
And it was given unto him to make war with the saints, and to overcome them: and power was given him over all kindreds, and tongues, and nations. (Rev 13)
Remember, it was the unrighteous jews that had Jesus killed bodily, against the will of the Roman governor.
Our warfare is not with natural sinners on earth, whom our Lord seeks to save, but against the self-justifying unrighteous hypocrites, that make war with Him and His saints.