Is God invisible and a spirit?
Yes, the triune God is Spirit and is invisible. The Son is the visible image of the invisible God, and by Him all things were created, both visible and invisible. The triune God is Spirit, not visible to human sight, yet the Son reveals Him.
Les teaches from Colossians that the Son is the image of the invisible God. He reminds us that the triune God is the Spirit and is invisible. The Son is the visible image of the invisible God, the firstborn of every creature. By Him all things were created that are in heaven and in earth, visible and invisible, thrones, dominions, principalities. Even Satan himself is a created being, created by God the Son. Every power that has ever been exercised was created by God the Son. Not only did He create them, but they were created for Him and for His purposes. He is before all things, and by Him all things consist, meaning held together. Les explains why the universe does not explode in nuclear fission: because God the Son controls every particle of it with His Word, with the power of His Word.