Trying to walk down a wilderness path in the night's darkness is quite different from walking it with a lamp in our hand. God Himself is our light, and as we live in daily, hourly communion with Him it is in that very proportion that we are enabled to walk in the light, in ways of safety. Our steps will be treading the crystal pathway of light if we are living in a manner such that His name is ever precious in our hearts, frequently on our lips, and always spoken when temptation is near. We will not hide any secret sin, but rather habitually will seek cleansing from anything that would separate us from our Father: "If we walk in the light, as He Himself is in the light, ... the blood of Jesus Christ His Son cleanses us from all sin" (I John 1:7).
Walking in the light also implies being obedient to his revealed will, led by Him as our Master, for "The commandment of the Lord is pure, enlightening the eyes" (Psalm 19:8). It is written that in God's light, we see light: "With Thee is the fountain of life: in Thy light shall we see light (Psalm 36:9). Thus, walking as children of light - in fellowship with Him who said, "I am the light of the world" - our understanding becomes increasingly enlightened, our minds purified. In contrast, when we are alienated from our Father, our understanding becomes darkened, and we are not able to perceive the truths of God. In this state, we are very vulnerable to being deceived by counterfeit "lights." When we continually choose to incline our hearts toward wickedness, we will eventually give up our souls to darkness. Making a trade of cleanness for uncleanness, we will soon be walking in the mere vanity and futility of our own minds (Ephesians 4:5). Then it will be as if the light of the glory of God in the face of His Son Jesus beats against a shuttered window in vain. If our heart becomes hard to our Creator, and we refuse to glorify Him as God and be thankful, then we shut out our soul from the light of God - of God who is our very source of life (Romans 1:21).