YES, love your enemy...even people who are against us.
Jesus asks us to love one another, and when we all do it, we do not have an enemy. Because love makes the difference. We do not have to accept "enemy's" life style to live peacefully together .
1 Cor 5:11 talks about an immoral life style. If the true Christian has intimate association with someone who calls himself a Christian while continuing to live an immoral life ( that life style gives a false testimony to Christ ), the non-Christian world may assume that the church approves such ommoral, ungodly living and in that case the name of Jesus Christ would be dishonored.
The Corinthians mistook the letter to mean that, on separating from sin, they should disassociate themselves from all immoral persons, including non-Christian people. Instead, Paul meant that they should separate from immoral persons in the church who claimed to be Christians ( vv 10-11 )
Titus 3:10- The severity of the action of the church will depend on the seriousness of the sin of the member being disciplined. Those who are livingin immorality should, after being exhorted to change, be excommunicated, since their sin has a levenous or contageous effect on others ( 1 Cor 5:5-7 . Even so, if they repent, they should be reinstated in church ( 2 Cor 2: 6-7 ), since the primary purpose the of discipline is not the reject, but to reform.
The main difference in the severity of the discipline was in the penitence of the person being disciplined. If person repented, he was to be reinstated (2 Cor 2:6-7 ) and if not, then " after the 1st and 2nd admonition" (Titus 3:10) he was to be rejected.
We need to remember that God never commanded His people at any time to hate their enemies ( In "Yet Jacob I have loved; But Esau I have hated" God did not talk about the PERSON Esau, but the NATION that came from him, namely, Edom. The nation Edom was deserving of God's indignation for their "violence against your brother Jacob [ Israel ]" ( Obad 10 ) They sided with Israel's enemies, blocked the way of their escape, and even delivered up those who remained.
Like the Nicolaitans, God hates the works of the sinner, not the sinner himself. John commands the believers that "hate the deeds of Nicolaitans, which I also hate" ( Rev 2:6 )
Matt 5:43- God never commanded His people at any time to hate their enemies. God is unchanging God of love and He cannot hate any person, nor can He command anyone else to do so. Jesus said the greatest commands were to love God and to love our neighbor as ourself ( Matt 22:36-37,39 )In point of fact, this very command is taken by Jesus from the Old Testaent. Leviticus 19:18 declares; "you shall love your neighbor as yourself" !
Why did Jesus say the OT taught we should "hate our enemy" in Matt 5:43? HE DID NOT, and for a very good reason. Nowhere in the OT can any such verse be found. In fact, Jesus is not quoting the OT here, but the pharisaical MISINTERPRETATION of the OT. Notice, Jesus does not say "it is written", as He often said quoting the OT ( Matt4:4,7,10 ). Rather He said , " you have heard", by which He meant Jewish "tradition" that had grown up around the OT and by which THEY had made the commadment of God of no effect ( Matt 15:3,6 ). The truth is that God of love commanded love both in the OT and NT and never at any time commanded that we hate each other.
It is a mistake from our part when we think that God hates the same way we, humans, do. God's hate is a judical act on the part of the righteous Judge, who separates the sinner form Himself. This is not contradictory to God's love, for in His love for sinners, God has made it possible for sin to be forgiven so that all can be reconciled to God.
So I see it is very imortant that we are true follwers of Christ, because as we should lovingly guide our fellow Christians to honor God and repent from our sins and correct our ways, also God wants us to love Him and honor Him and be true to His mission or He will separate us from Him in eternity. So it is a dangerous to be a false witness of God.