119:105 NUN. Thy word [is] a lamp unto my feet, and a light unto my path.

Isa 8:20 To the law and to the testimony: if they speak not according to this word, [it is] because [there is] no light in them.

2Pe 1:19 We have also a more sure word of prophecy; whereunto ye do well that ye take heed, as unto a light that shineth in a dark place, until the day dawn, and the day star arise in your hearts:

The Word of Truth is pure light and coherent. The Word guides our path. The Word gets us through dark places.

Jhn 1:14 And the Word was made flesh, and dwelt among us, (and we beheld his glory, the glory as of the only begotten of the Father,) full of grace and truth.

Jhn 17:17 Sanctify them through thy truth: thy word is truth.

The process of change in our lives depends on the Word. The Word of God guides our actions. Treating man's word as equal clouds the issue.

2Cr 4:2 But have renounced the hidden things of dishonesty, not walking in craftiness, nor handling the word of God deceitfully; but by manifestation of the truth commending ourselves to every man's conscience in the sight of God.

2Cr 6:7 By the word of truth, by the power of God, by the armour of righteousness on the right hand and on the left,

Eph 1:13 In whom ye also [trusted], after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that holy Spirit of promise,

Col 1:5 For the hope which is laid up for you in heaven, whereof ye heard before in the word of the truth of the gospel;

1Th 2:13 For this cause also thank we God without ceasing, because, when ye received the word of God which ye heard of us, ye received [it] not [as] the word of men, but as it is in truth, the word of God, which effectually worketh also in you that believe.

2Ti 2:15 Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth.

Jam 1:18 Of his own will begat he us with the word of truth, that we should be a kind of firstfruits of his creatures.

1Jo 3:18 My little children, let us not love in word, neither in tongue; but in deed and in truth.

When a laser shines it's light, it's coherent and and powerful. Laser images reveal the dimensionality of objects. The problem with the false light is it scatters. I have seen quotes of some commentators that certain parts of the Bible cannot be understood. Clouding the message obscures the truth. False light is deceptive. Relying on something that contains some truth leaves you in the darkness and subject to deception. Although there are men who will point to themselves for guidance, the true guidance is God's Word. Every human being is flawed. To be effective, we must rely on God's Word, not man's.