Kids fears: God is big and scary

This one really saddens my heart and I have to wonder if it stems from "hellfire and brimstone," Bible-thumping type teaching. Here are some verses that I hope will give my kids a different perspective:

2 Chronicles 2:6a

^6a But who is able to build a temple for him, since the heavens, even the highest heavens, cannot contain him?

Isaiah 40:12 Isaiah 40:12 (New International Version, ©2010)

¹² Who has measured the waters in the hollow of his hand,
or with the breadth of his hand marked off the heavens?
Who has held the dust of the earth in a basket,
or weighed the mountains on the scales
and the hills in a balance?

Jer 32:17 Jeremiah 32:17 (New International Version, ©2010)

¹⁷ “Ah, Sovereign LORD, you have made the heavens and the earth by your great power and outstretched arm. Nothing is too hard for you.