If you were stuck in a tree on a somewhat thin branch a the wind was blowing you everywhere what would you do? Lets say that you have a branch that is very thick and does not sway with the wind just in reach, what would you do? Would you grab it to make sure you don't fall, or would you jump on. Jesus is that thick branch that does not sway with the world. We can lean on God but still sway in motion with the world. That is being lukewarm.

Revelation 3:16
So, because you are lukewarm—neither hot nor cold—I am about to spit you out of my mouth.

God spits out people who are lukewarm. We need to go all out to stay with Jesus and be on fire for Him.