Glass is made by super-heating ordinary sand to 3,090 degrees (1,700 c). The sand, which is mostly made of silicon dioxide, melts and becomes a liquid. That liquid can then be shaped, and as it cools it becomes clear and re-hardens.
Years ago I watched a glass blower at work. He dipped a long hollow tube into the molten sand and gently blew through the tube, rolling the cooling liquid into a vase, an ornament, and then a simple drinking glass. Once each object was fully cool and hard, they were put on display or sold for practical purposes like drinking from or letting light in through the wall of your home. The finished product revealed the existence, skill, and power of the creator.
A glass vase reveals many things about its creator, but there is much more that can’t be known from his work. But suppose the glass-blower came to your home. You could see his work, talk to him, ask questions, and get to know him for who he is. Seeing him in person would give you greater insight into his personality, power, and purpose.
The universe reveals the existence, power, and skill of God.
The heavens declare the glory of God; and the firmament shows His handiwork (Psalm 19:1). Since the creation of the world His invisible attributes are clearly seen, being understood by the things that are made, even His eternal power and Godhead, so that they are without excuse (Romans 1:20).
However, the creation is incapable of showing many things about the Creator: His personality and purpose, love and grace, mercy and justice. We know He exists and is powerful, but to know more we must either get to Him or Him come to us.
The Bible says, No one has seen God at any time. The only begotten Son, who is in the bosom of the Father, He has declared Him (John 1:18). In other words, because God is invisible, Jesus became visible to reveal the Father to us. Jesus became 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 (John 1:14).
Today, Jesus is in Heaven. The Revealer of God the Father doesn’t walk among us, but He has left His revelation. The only way we can know God, His works, and His purpose is through the pages of the Bible.