It is necessary for us to devote ourselves fervently to Jesus: to desire chiefly above all things Him, and to be hot/on fire/zealous for Him. The words of Jesus in Revelation 3 are very strong. Hey says,
"I know thy works, that thou art neither cold nor hot: I would thou wert cold or hot. So then because thou art lukewarm, and neither cold nor hot, I will vomit thee out of my mouth." [Rev 3:15-16]
The major problem in Laodicea was their lack of zeal. They were lukewarm; they were apathetic and neutral about Jesus and the things of God. Jesus shows us later that He is not even in their church, He’s knocking to get in. Likewise, Jesus isn’t dwelling in the heart of someone who is ever-lacking fervor for Him. We all go through dry seasons, ups and downs, but to those, like Laodicea, who think, despite their lack of zeal, are rich, Jesus says, “Because thou sayest, I am rich, and increased with goods, and have need of nothing; and knowest not that thou art wretched, and miserable, and poor, and blind, and naked.”
We see the need of this typified in 1 Samuel 21:6:
"So the priest gave him hallowed bread: for there was no bread there but the showbread, that was taken from before the LORD, to put hot bread in the day when it was taken away."
The priests were commanded to replace the shewbread (hallowed bread) every sabbath. And notice how the bread that is replacing the old bread is HOT. The Holy Spirit makes certain to tell us that the bread is indeed hot bread.
Our fellowship with Jesus is to be fresh and hot. We are to regularly renew it! Don’t let it grow cold but fan the flame. And, as Paul states, “[be] not lagging in diligence; boiling in spirit; serving the Lord.” Our spirit is to be bubbling over like a pot on the stove. Let us take heed to the warning in Hebrews, which says, “therefore we ought to devote ourselves exceedingly to the things which we have heard, lest at any time we should drift.” Do not drift away in apathy or neglect, but “press toward the goal for the prize of the high calling of God in Christ Jesus.” [Phil 3:14]
Take warning also from the priests in Malachi, of whom The LORD says,
“But ye have profaned [My Name], in that ye say, The Table of The LORD is polluted; and the fruit thereof, even His meat, is contemptible. Ye said also, behold, what a weariness is it!…” [Mal 1:12-13]
The priests think it is weariness to serve The LORD; they think it is a weary burden to make new bread every seven days and eat the old bread. Let us not be like the wicked priests, but as a royal priesthood, let us perform our duty of loving Jesus with a boiling hot spirit, not becoming slothful or apathetic.