56 Or “I intend.”
57 This is the literal meaning of the Greek verb ἐμέω (emeō). It is usually translated with a much weaker term like “spit out” due to the unpleasant connotations of the English verb “vomit,” as noted by L&N 23.44. The situation confronting the Laodicean church is a dire one, however, and such a term is necessary if the modern reader is to understand the gravity of the situation.

In other versions

So, because you are lukewarm, and neither hot nor cold, I will spit you out of my mouth.

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

So, because you are lukewarm, and neither hot nor cold, I am going to vomit you out of my mouth.

But since you are like lukewarm water, neither hot nor cold, I will spit you out of my mouth!

Thus, because you are lukewarm and neither hot nor cold, I am about to vomit you out of my mouth!

So then because thou art lukewarm, and neither cold nor hot, I will spue thee out of my mouth.

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