Revelation 3:16
"So then because thou art lukewarm, and neither cold nor hot, I will spue thee out of my mouth."
Cross References (ranked by relevance)
Revelation 2:5
34
Remember therefore from whence thou art fallen, and repent, and do the first works; or else I will come unto thee quickly, and will remove thy candlestick out of his place, except thou repent.
Jeremiah 14:19
11
Hast thou utterly rejected Judah? hath thy soul lothed Zion? why hast thou smitten us, and there is no healing for us? we looked for peace, and there is no good; and for the time of healing, and behold trouble!