Why is it possible to know anything at all?
As human beings we are made in the image of God and possess the character of God. Our foundation of knowledge is God. Since God is omniscient (which means all knowing) we can sometimes knowing knowers. John 1:1-4, “In the beginning was the Word, and the Word was with God, and the Word was God. The same was in the beginning with God. All things were made by him; and without him was not any thing made that was made. In him was life; and the life was the light of men.” The word was “the light of men” which means it was the innate intellect knowledge of men. In John 1:9, John says this was the true light of men. The basis of human intellect knowledge is based on God’s own intelligence. James 1:5 says, “If any of you lack wisdom, let him ask of God, that giveth to all men liberally, and upbraideth not; and it shall be given him.” Jeremiah 32:27, “Behold, I am the Lord, the God of all flesh: is there any thing too hard for me?” It is possible to acquire knowledge of something because we know the omniscient God. Though were are limited and our knowledge is way below God it is important to know God always takes the initiative to transfer knowledge to us because He wants us to know Him more. We know God by reveals Himself to us by general or special revelation. Since creation The world have clearly seen God’s invisible qualities, his eternal power and divine nature from what He has made. Paul says in (Romans 1:20), “For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and Godhead; so that they are without excuse:”
Human being have got the personality of God. We can know that God exist through general knowledge but we need special revelation (extra natural way) to know that His is triune. God revealed Himself incredibly in various forms in the bible through Abraham and Sarah when they had a child (Isaac) at a very old age. He revealed himself through the burn bush, when the children of Israel crossed the red sea and the Jordan river, when walls Jericho fell down through something that can be scientifically explained. When he revealed Himself Joshua, Moses, Abraham, Noah, David, He had had genuine conversations with them. Now He reveals Himself to us through Jesus Christ who came to fully redeem and restore human beings through His blood on Cross at Calvary, His grace and truth. God came restore relationship with God since we had been separated from God by our disobedience and sins. It is important know that God can clearly communicate with us because He has done it before, and He is still does, and He will continue to do it as long as our relationship with Him is right. There is nothing that will stop us to hear from God and also talking to at all. John 10:27-28 says “My sheep listen to my voice; I know them, and they follow me. I give them eternal life, and they shall never perish; no one will snatch them out of my hand.” In John 16:13 Jesus say, “When the Spirit of truth comes, he will guide you into all the truth, for he will not speak on his own authority, but whatever he hears he will speak, and he will declare to you the things that are to come. Luke says in Acts 2:17 “And in the last days it shall be, God declares, that I will pour out my Spirit on all flesh, and your sons and your daughters shall prophesy, and your young men shall see visions, and your old men shall dream dreams;” Hebrews 1:1-3 “God, who at sundry times and in divers manners spake in time past unto the fathers by the prophets, Hath in these last days spoken unto us by his Son, whom he hath appointed heir of all things, by whom also he made the worlds; Who being the brightness of his glory, and the express image of his person, and upholding all things by the word of his power, when he had by himself purged our sins, sat down on the right hand of the Majesty on high:”