What does the bible say about lukewarm Christianity?

Revelation 3:15-16 - I know your deeds, that you are neither cold nor hot. I wish you were either one or the other! So, because you are lukewarm—neither hot nor cold—I am about to spit you out of my mouth.

1 John 2:15-16 - Do not love the world or anything in the world. If anyone loves the world, love for the Father is not in them. For everything in the world—the lust of the flesh, the lust of the eyes, and the pride of life—comes not from the Father but from the world.

Titus 1:16 - They claim to know God, but by their actions they deny him. They are detestable, disobedient and unfit for doing anything good.

Matthew 7:21-23 - "Not everyone who says to me, 'Lord, Lord,' will enter the kingdom of heaven, but only the one who does the will of my Father who is in heaven. Many will say to me on that day, 'Lord, Lord, did we not prophesy in your name and in your name drive out demons and in your name perform many miracles?' Then I will tell them plainly, 'I never knew you. Away from me, you evildoers!'

Luke 6:46 - "Why do you call me, 'Lord, Lord,' and do not do what I say?