Even before Isaiah's prophesy, Peter re-affirms this truth !
1 Peter 1:19-20
19 But with the precious blood of Christ, as of a lamb without blemish and without spot:
20
Who verily was foreordained BEFORE the foundation of the world, but was MANIFESTED in these last times for you,
I agree @Randy Kluth in the question of spiritual maturity as this one always resorts to calling others " little" men in post where others disagree.
IT annuls most of what is said by such a one !
Thank you. May God give us all grace to get past the little things. Jesus warned us not to spend time picking specks out of the eyes of our brothers and sisters. Those aren't the important issues.
Rather, we are to judge in more important matters. Paul said that given we are faithful we will even judge angels in the future. Perhaps it will be our judgment that keeps devils out of the Kingdom to come?
So if we are thus to judge angels--beings greater than ourselves, we are also to maintain a semblance of purity in the church, by not allowing blatant transgression of God's moral law. The sins of rebellion against God's word should be pretty transparent if they are occurring among Christians. Murderous, malicious acts are more than "specks in the eye."
Christians committing acts of sexual immorality are obviously to be removed from church membership. Theft taking place among Christians should not be treated as if "recipients of Christ's grace." Of course, God can forgive anything, but doing these things with no sense of repentance are acts of rebellion against God, and should be judged, if only temporarily.
So do we spend too much time on the "specks in our eyes?" Well, we're all susceptible to this, and I'll leave it at that. Momentary anger, name-calling, and other forms of inappropriate discussion are going to happen with us all. But we should just give it time to go away. (I'm not saying it's okay--we should try to help someone get out of a pit. Ignoring it is next to condoning it.)
With hearts truly devoted to Christ those things can easily go away. Those who hold onto records of wrong, or who remain accusing and unforgiving, will themselves not be forgiven. And they will face God's hostility to them, if only temporarily.