Buy of Me Gold Refined by Fire

Revelation 3:14-22,
[14] "And to the angel of the church in Laodicea
write: 'The words of the Amen, the faithful and true
witness, the beginning of God's creation.
[15] "'I know your works: you are neither cold nor
hot. Would that you were either cold or hot! [16] So,
because you are lukewarm, and neither hot nor cold, I
will spit you out of my mouth. [17] For you say, I am rich,
I have prospered, and I need nothing, not realizing that
you are wretched, pitiable, poor, blind, and naked. [18] I
counsel you to buy from me gold refined by fire, so that
you may be rich, and white garments so that you may
clothe yourself and the shame of your nakedness may not
be seen, and salve to anoint your eyes, so that you may
see. [19] Those whom I love, I reprove and discipline, so
be zealous and repent. [20] Behold, I stand at the door
and knock. If anyone hears my voice and opens the door,
I will come in to him and eat with him, and he with me.
[21] The one who conquers, I will grant him to sit with
me on my throne, as I also conquered and sat down with
my Father on his throne. [22] He who has an ear, let him
hear what the Spirit says to the churches.'" (ESV)