If God is Invisible and Immortal, then it is impossible for the mortal man to simply stumble upon or discover God for who He is through carnal research and ordinary mindset of reasoning. God as an Invisible Immortal Spirit Being cannot be discovered through our natural human research. We can only get to know Him when He reveals Himself to our spirit man. 

"And without controversy great is the mystery of godliness: God was manifest in the flesh, justified in the Spirit, seen of angels, preached unto the Gentiles, believed on in the world, received up into glory."

~1 Timothy 3:16

The mysteries of Godliness of course appears as foolishness to mankind because man in his carnal state of existence tends to rationalise things using his carnal natural sensors. The carnal senses of man are like antennas, that only picks up natural information, processes them backward and ends up with negative conclusions, which although appears to make perfect natural sense but are totally spiritually illogical. Logic in the reality sense of life is not a matter of natural intelligence or physical analytical perspective of sensibility. It is all a matter of spiritual reality. The natural is not a world that, exists on its own through a self-regulatory process. The natural is a world, that exists by supernatural power, regulated and controlled by supernatural powers, which are over and above the imaginations, articulations and intelligent reasoning capacity of the mere mortal man. 

Life as a spiritual matter is all about power. In the spiritual world, which is the real world, a person is not considered powerful because of the natural world possessions that he or she has but by whom he or she is connected with. No human being is spiritually neutral of a spiritual world connection. And it makes no difference whatsoever whether a person believes he or she is just a physical being or not. The overall Head and ruler of the supernatural realm, which the natural is subject to and not independent of is God. In the spiritual realm, a person is either a son of God, a slave to sin or an angel of life.  God as the supernatural, super-power, All in all Self-existing, Almighty, powerful Creator and uncreated God created man to be sons unto Him. And as sons to operate in His dominion power and authority of life in total obedience to His spiritual rule of law. However, man through the disobedient act of the first man Adam became separated from God and into sin (Romans 5). To restore us back to sonship, God in the Person of Christ fulfilled His own righteousness law of remissions of sins through Christ as the unblemished sacrifice for sins (Hebrews 9:22-28). And by His own finished work of remission through the Person of Christ, man is able to have God's forgiveness and reconcile back to His Holy Spirit of life as sons and joint heir of His eternal life kingdom with Christ who is His sonship dominion bloodline revealed in the flesh (John 1:12, 3:16, Romans 8:14-17).  This, in a nutshell is mystery of godliness. 

However, as straightforwardly simple this might seem for those who are in spiritual awakening and living in the unadulterated understanding of Godly mystery, this perfect spiritual  truth of Godly mystery will sound to the spiritually dead as nothing but confusion mumbo jumbo. This of course is no surprise because none can make sense of God's mysteries in a spiritual state of death. God is life. Therefore, when people say there is no evidence of God in existence, what they are in fact saying is that they are spiritually dead, void and completely empty of God who is life itself. The evidence of God's existence is His Holy Spirit. And none can have this evidence outside of Christ who is His Person revealed in the flesh. In Christ, we receive the complete proof of God's existence as life itself in our souls. Therefore, when we are truly in Christ and alive in our spirit, we no longer seek for evidence of God's existence outside of us because God's Holy Spirit as evidence of life itself is already in us. The testimony that, we bear therefore of God as All in all when in Christ, is not of the flesh. But a testimony of life, which we bear in awakening mind of the spirit in perfect alignment with the same testimony God bore of Himself in heaven and earth (1 John 5:7-21).

Life can only make sense when we are in revelation knowledge of the mystery of Godliness. To try and make sense of life from natural analytical perspective is indeed to end up with an erroneous spiritual conclusion.  The carnal intelligence of Man cannot articulate the mysteries of God. And this is why God in His highest intelligence had to take on the form of Man in the Person of Christ to reveal His spiritual intelligent mysteries unto Man. Life is more than what it seems and appears to be in the natural. And to deny man spiritual eye opening, Satan the first to sin and chief perpetrator of rebellion against God is always busy deceiving man with all kinds of foolishness ideas, that he labels as super intelligence. Satan knows that as long as man remains spiritually blind, he can never make sense of the mysteries of God. And this is the main reason why Satan endlessly blindfolds man with spiritual lies that he masquerades as natural truth. But God is faithful. Knowing that, man in the flesh is weak, He by grace enables us to encounter Him when He sees in our hearts that we are indeed searching for Him in humility of hearts and not with an arrogant mindset. Arrogance is a core attribute of Satan and God as the Almighty Sovereign Ruler of all despises arrogance but gives grace to the humble hearted (James 4:6-7). And those who are arrogant minded and believes they know all will continue to be fooled by Satan the disgraced arrogant fallen angel. 

The mysteries of God cannot be made sense of through carnal mind reasoning. The mysteries of God will only make perfect sense to us when we personally encounter His Majestic supernatural redemption, forgiveness and salvation power. Encounter defines purpose and places us in a perfect position of understanding God's mysteries. And through encountering God personally, we know without a doubt that God is real and that, He is indeed the Almighty God who as Creator of all, is above all. None can encounter God and remain the same. Encounter changes our reasoning mindset and gives us a conviction that, the devil cannot mess with. Encounter is all it takes to change a chronic non-believer into: A ready to do all for God's glory believer. God indeed wants us to know Him for who He is. And this is why He manifested His mystery as love from the supernatural to the natural in the Person of Christ. The mysteries of God are indeed like foolishness to man. But the foolishness of God is indeed greater than all the entire so, called wisdom of man added together. Today, if you will not harden your heart, you can be awoken to the reality of the mysteries of Godliness by surrendering your all to Christ who is the entire mystery of Godliness revealed.   

"Where is the wise? where is the scribe? where is the disputer of this world? hath not God made foolish the wisdom of this world? 

For after that in the wisdom of God the world by wisdom knew not God, it pleased God by the foolishness of preaching to save them that believe. For the Jews require a sign, and the Greeks seek after wisdom: 

But we preach Christ crucified, unto the Jews a stumblingblock, and unto the Greeks foolishness; But unto them which are called, both Jews and Greeks, Christ the power of God, and the wisdom of God. Because the foolishness of God is wiser than men; and the weakness of God is stronger than men. 

For ye see your calling, brethren, how that not many wise men after the flesh, not many mighty, not many noble, are called: But God hath chosen the foolish things of the world to confound the wise; and God hath chosen the weak things of the world to confound the things which are mighty; 

And base things of the world, and things which are despised, hath God chosen, yea, and things which are not, to bring to nought things that are: That no flesh should glory in his presence. 

But of him are ye in Christ Jesus, who of God is made unto us wisdom, and righteousness, and sanctification, and redemption: That, according as it is written, He that glorieth, let him glory in the Lord."

~ 1 Corinthians 1:20-31