Yes.

Jesus welcomes little children, because the kingdom of heaven belongs to people like them. He says you can’t get into the kingdom of heaven unless you become like little children. And he says the way to become the greatest in the kingdom of heaven is to take the lowly position of a child.

No.

When some boys acted like children (because they were) and made fun of a bald prophet, God sent bears to kill 42 of them.

Jesus said the people of his generation were like little children, and also that they were a brood of snakes who would be condemned to hell on judgment day.

Paul told his followers they needed to stop thinking like children. He said Jesus wanted them to become mature in every respect, and stop being gullible and undiscerning infants.

Maybe? Sometimes?

Paul told his followers they should be adults in their thinking, but they should be infants “in regard to evil“. I’m not sure what they’re supposed to do when they’re thinking about evil.

Peter told his followers they should crave “spiritual milk” like babies, but only so they could grow up.