Sadly there are Christians who because of their lukewarm status becomes candidates for the works of the devil. Revelation 3:15-16 “I know your works, that you are neither cold nor hot. I could wish you were cold or hot. So then, because you are lukewarm, and neither cold nor hot, I will vomit you out of My mouth.
The reason you find Christians who can be in a church but still hate with a passion is because they are available for the hate spirit to reside in. In the world they say nature hates a vacuum. It’s either you are for God or against. Matthew 6:24 “No one can serve two masters; for either he will hate the one and love the other, or else he will be loyal to the one and despise the other. You cannot serve God and mammon.
The bible says light and darkness cannot coexist. We must pray that God help us to worship Him in truth and in spirit. Heart issues can only be covered for so long because the works of the flesh is evident.
Galatians 5:19-21 Now the works of the flesh are evident, which are: adultery, fornication, uncleanness, lewdness, idolatry, sorcery, hatred, contentions, jealousies, outbursts of wrath, selfish ambitions, dissensions, heresies, envy, murders, drunkenness, revelries, and the like; of which I tell you beforehand, just as I also told you in time past, that those who practice such things will not inherit the kingdom of God.