Verbatim references:

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Et sic de similibus references:

Anyone seeking to find his way on a pitch black night through an unfamiliar environment without the aid of a candle or a light would find it to be virtually an impossible task.
Very quickly he would become completely and hopelessly lost.
While groping around in the darkness, his hand perchances touches a tree, but because he is unfamiliar with the area he is in, the tree would provide him with absolutely no useful point of reference.
He would still be lost.
Luk 11:
33 No man, when he hath lighted a candle, putteth [it] in a secret place, neither under a bushel, but on a candlestick, that they which come in may see the light.
34 The light of the body is the eye: therefore when thine eye is single, thy whole body also is full of light; but when [thine eye] is evil, thy body also [is] full of darkness.
35 Take heed therefore that the light which is in thee be not darkness.
36 If thy whole body therefore [be] full of light, having no part dark, the whole shall be full of light, as when the bright shining of a candle doth give thee light.

Brethren, any attempt to find your way through the unfamiliar realm of the spirit without a light to guide you would have the undesirable result of you being absolutely confused and dismayed.
This state of bewilderment and confusion is what the scripture means by the expression "lost soul".
1Cr 14:
33 For God is not [the author] of confusion, but of peace, as in all churches of the saints.

A lantern that emits a bright light would be heaven sent to a person who was lost in the woods under total darkness.
Psa 18:
28 For thou wilt light my candle: the LORD my God will enlighten my darkness.

Jesus Christ is the Light of the world and was Heaven sent by God the Father to seek and to save the lost.
Jhn 8:
12 Then spake Jesus again unto them, saying, I am the light of the world: he that followeth me shall not walk in darkness, but shall have the light of life.