"the Divine friend of children"
Woodcut depicting Jesus receiving the children (1860)
Public DomainWoodcut depicting Jesus receiving the children (1860) - Credit: Julius Schnorr von Carolsfeld

The ‘Divine friend’ alludes to Christ, who in Matthew 19: 13-14 receives children:

Then were there brought unto him little children, that he should put his hands on them, and pray: and the disciples rebuked them. But Jesus said, Suffer little children, and forbid them not, to come unto me: for of such is the kingdom of heaven.