Thomas Aquinas, on Isa 11:8

“And the sucking child shall play on the hole of the asp: and the weaned child shall thrust his hand into the den of the basilisk.”

“372. And the sucking child shall play. Here he shows the security of the young, and he sets out three things: their confidence, where against horror he sets out joy: on the other hole of the asp, that is, on the trials which the devil or a tyrant will send, and immediately, because he has begun to be nourished by the milk of the doctrine of faith: and not only so: but we glory also in tribulation, knowing that tribulation works patience (Rom 5:3); or in converting the wicked: he that hears, let him say: come (Rev 22:17). Against flight, which is indicative of fear, he sets out the daring of invasion; the weaned child, now eating solid food, shall do more, for he shall thrust his hand into the den of the basilisk, that is, the devil, who is king over all the children of pride (Job 41:25); for he will confidently expose himself to the persecutions of tyrants, as did many martyrs: he exults boldly, he goes forward to meet armed men (Job 39:21); or this refers to preachers, who thrust the hand of preaching for the conversion of sinners; or at the breasts, of newness and delight, for the newly converted rejoice at this.”

Imported from an open dataset — not yet checked against the printed edition.