Romans 3:19-20
Now we [all] know that everything the law says applies to those who are under [obligation to obey] that law, [Note: Here "the law" appears to refer to the Old Testament Scriptures generally, since Psalms and Isaiah are quoted. See verses 10-18]. This is so that the mouth of every objector may be stopped [i.e., from making excuses for his sin], and thereby bring the entire world under God's judgment [i.e., both Jews and Gentiles].
Matthew 16:19
[And] I will give you the keys of the kingdom of heaven [i.e., for opening up the way into it]. And whatever [truth] you [and the other apostles. See 18:18] require [people to believe and practice] here on earth will have already been required of them [by God] in heaven. And whatever [truth] you do not require [of people] on earth, will not be required [by God] in heaven."
Matthew 18:17-18
And if he refuses to listen to them [i.e., the witnesses], explain the [whole] matter to the church [i.e., probably a specially called meeting of mature Christians to resolve the matter]. And if he refuses to listen to the church also, [i.e., to acknowledge his sin and repent of it], consider him like an [unconverted] Gentile or tax collector [i.e., do not have fellowship with him].
John 20:23
Whosever sins you forgive, they will be forgiven [by God]. And whosever sins you do not forgive, they will not be forgiven [by God]." [Note: Actual forgiveness would result only when people responded, by faith, to the Gospel message. See Acts 2:37-38].
Acts 20:28
So, pay close attention to your [own] lives, and to all [members] of the flock [i.e., the congregation] of which the Holy Spirit has made you overseers [i.e., elders, shepherds or pastors]. Provide [spiritual] food for the church of the Lord which He purchased by [shedding] His own blood.
Romans 7:7
What shall we say then? Is the law of Moses sinful? Certainly not! For I would not have known what sin was if it had not been for the law. For [example]; I would not have known [what it meant] to covet [i.e., have a strong desire for what belongs to someone else] except that the law said [Ex. 20:17], "You must not covet."
1 Corinthians 5:4-6
[I command you], when you people are assembled together, with my spirit [also present], in the name [i.e., by the authority] and power of our Lord Jesus,
2 Thessalonians 3:14-15
And if any person does not obey our instructions, [given] in this letter, you should take note of him so that you do not associate with him, in hope that he will become ashamed [of his conduct].
1 Timothy 1:20
Among these people are Hymenaeus and Alexander, whom I delivered over to Satan [Note: This probably refers to withdrawing fellowship from them. See I Cor. 5:1-5], so that they would learn not to speak against God [anymore].
2 Timothy 2:16-17
But avoid worldly, empty chatter, for those who practice it will become more and more ungodly,
2 Timothy 3:13
But evil people and impostors will go from bad to worse [in their behavior], deceiving people and being deceived by them.
Hebrews 13:7
Remember your leaders who told you God's message. [Note: This probably refers to former preachers who had since died]. Consider the outcome of the way they lived and imitate their faith.
Revelation 2:23
And I will strike her children dead [or, "kill her children by some terrible calamity" See Ex. 5:3 LXX]. Then all the churches will know that I am the One who searches the inmost being of people [Note: The Greek says, "searches the kidneys and hearts." In that day these internal organs stood for the inner thoughts, emotions, etc.]. And I will repay each one of you people according to what you have done.