God Visible and Invisible

God Invisible
No man hath seen God at any time; the only begotten Son, which is in the bosom of the Father, he hath declared him. (John 1:18 KJV)

No one has seen the Father except the one who is from God; only he has seen the Father. (John 6:46 NIV)

No one has seen God at any time; if we love one another, God abides in us, and His love is perfected in us. (1 John 4:12 NASB)

But He said, "You cannot see My face, for no man can see Me and live!" (Exodus 33:20 NASB)

God Visible
Then went up Moses, and Aaron, Nadab, and Abihu, and seventy of the elders of Israel: And they saw the God of Israel: and there was under his feet as it were a paved work of a sapphire stone, and as it were the body of heaven in his clearness. And upon the nobles of the children of Israel he laid not his hand: also they saw God, and did eat and drink. (Exodus 24:9-11 KJV)

The LORD would speak to Moses face to face, as a man speaks with his friend. Then Moses would return to the camp, but his young aide Joshua son of Nun did not leave the tent. (Exodus 33:11 NIV)

And when Abram was ninety years old and nine, the LORD appeared to Abram, and said unto him, I am the Almighty God; walk before me, and be thou perfect. (Genesis 17:1 KJV)

Question
Is God visible or invisible?

Answer
God is Trinity. God the Father is invisible, but God the Son is visible. All appearances of God in the Old Testament was the pre-incarnate Christ. So God is both visible and invisible. Invisible, but yet have an image. Nothing is too hard for God.

He is the image of the invisible God, the firstborn of all creation. (Colossians 1:15 NASB)