"The A.T. is marked for daylight travel in both directions using a system of white "blazes,"
A hiker with any experience knows this. Without the blazes, a hiker may not be on the Trail, but merely wandering in the woods. If your goal is to complete a thru-hike, it goes without saying that light and white blazes are necessary to reach Katahdin via the Appalachian Trail.
What if your goal was to know God? What if your goal was to reach heaven to enjoy it forever? What are the "blazes" that can lead you there?
The creation in which we live is the original “white blaze”. It points us to the Creator. Theologians call this "general revelation".
"The heavens declare the glory of God, and the sky above proclaims His handiwork". (Psalm 19:1)
"The wrath of God is revealed from heaven against all ungodliness and unrighteousness of men, who by their unrighteousness suppress the truth. For what can be known about God is plain to them, because God has shown it to them. For his invisible attributes, namely, His eternal power and divine nature, have been clearly perceived, ever since the creation of the world, in the things that have been made. So they are without excuse. For although they knew God, they did not honor Him as God or give thanks to Him, but they became futile in their thinking, and their foolish hearts were darkened. Claiming to be wise, they became fools, and exchanged the glory of the immortal God for images resembling mortal man and birds and animals and creeping things.” (Romans 1:18-23)
This general revelation speaks in a way that is “plain”, so clearly that “the wrath of God” is revealed to those who “suppress” it (and choose something else over honoring God and giving Him glory).
Through general revelation, the creation tells us there is a God who created, and about his “eternal power and divine nature”.
But God did more so we could know Him. Theologians call this “special revelation”.
Long ago, at many times and in many ways, God spoke to our fathers by the prophets, but in these last days He has spoken to us by His Son, whom He appointed the heir of all things, through whom also He created the world. He is the radiance of the glory of God and the exact imprint of His nature, and He upholds the universe by the word of His power. After making purification for sins, He sat down at the right hand of the Majesty on high. (Hebrews 1:1-3)
God specially revealed Himself in two ways. First, the “prophets” is a reference to the Old Testament portion of the Bible. God gave an increasing level of detail about Himself throughout the Old Testament, another trail marker in addition to the Creation. Secondly, He revealed Himself very specifically by His Son, Jesus Christ, who is the “exact imprint of his nature”. The New Testament is the written record of Jesus coming to earth, His life on earth, and the way to live for those who follow Him.
So, if your goal is to know God and find the trail that leads to Heaven, I have good news for you! The Creation and the Bible (Old and New Testaments) are intended to mark the blazes that can lead you to Him. But what good would blazes do if the trail were blocked - tangled by thorns, boulders, and fallen trees? Good news, part 2! “After making purification for sins”, a reference to Jesus death on the cross, “He sat down at the right hand of the Majesty on high”. Jesus clears the trail that leads to Heaven by taking all sin away from those who put their trust in Him. It cannot block the way to God because forgiveness is provided by the finished work of Christ!