God cannot be measured
When we ask how big God is, we usually mean something real: Is there anything beyond him? Can he handle a world this vast, or a life this complicated? Scripture answers by showing that God is not part of creation in the way mountains, stars, and people are. He made all of it.
Solomon faced this question when he dedicated the temple in Jerusalem. He knew the temple mattered, but he also knew no building could hold its Maker. Even the highest heavens could not contain God (1 Kings 8:27). So God is not a giant creature occupying one corner of the universe. He is greater than the universe he made.
But will God indeed dwell on the earth? behold, the heaven and heaven of heavens cannot contain thee; how much less this house that I have builded?
His greatness reaches beyond creation
Isaiah uses vivid pictures to stretch our imagination. God is pictured as measuring waters in his hand and marking out the heavens, not to give us a literal measurement of God's hand, but to show that what overwhelms us is small before him (Isaiah 40:12). Oceans, galaxies, nations, and centuries are not too large or chaotic for God.
That doesn't make people small in God's eyes. The same God who made the heavens pays attention to the weak, the weary, and those who need strength (Isaiah 40:28-29). His size, so to speak, is not cold distance. His power is joined to care.
Hast thou not known? hast thou not heard, that the everlasting God, the Lord, the Creator of the ends of the earth, fainteth not, neither is weary? there is no searching of his understanding.
God is present, not confined
The Bible says God is present everywhere. Through Jeremiah, he challenges the idea that anyone could hide beyond his sight, because heaven and earth are filled with his presence (Jeremiah 23:23-24). David voices the same confidence: whether he rose to heaven or descended to the depths, God was already there (Psalm 139:7-10).
This does not mean God is identical with everything in nature. He is the Creator, distinct from what he has made. But there is nowhere you can go where he is absent. A hospital room, a crowded train, a lonely bedroom, a place of joy, all are within his presence.
The great God came near in Jesus
Here is one of the Bible's most astonishing claims. The eternal Word, who was with God and was God, entered human life in Jesus (John 1:1; John 1:14). Jesus did not stop being divine, but he truly took on human flesh. The One through whom all things were made stepped into the world he made (John 1:3).
So God's greatness is not merely an idea to admire from far away. In Jesus, we see his character up close: compassion for suffering people, welcome for outsiders, forgiveness for sinners, and authority even over death. If you wonder whether the God who holds the universe could notice you, Jesus gives a clear answer. He can, and he does.
And the Word was made 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.