I catechize my children with the Catechism for Young Children based on the Westminster Shorter Catechism and heard this as I read your note:
What is God?
God is a Spirit,
and has not a body like men.

I catechize my children with the Catechism for Young Children based on the Westminster Shorter Catechism and heard this as I read your note:
What is God?
God is a Spirit,
and has not a body like men.

We use the same one with our young ones, as soon as they can talk. They then graduate to the WSC at around 10 or so.
A solid foundation. Kudos brother.