Matthew 23:37-39 (ESV)
"O Jerusalem, Jerusalem, the city that kills the prophets and stones those who are sent to it! How often would I have gathered your children together as a hen gathers her brood under her wings, and you would not!  See, your house is left to you desolate.  For I tell you, you will not see me again, until you say, 'Blessed is he who comes in the name of the Lord.' "
This is the classic Lutheran “sedes doctrinae” for the assertion that man can resist the Holy Spirit, and therefore it is our fault and not the fault of God when we hear the gospel and do not believe. We have the will to resist, but not the will to believe. Or if we listen to our will, we disbelieve, if we listen to God’s will we believe. It’s gets complicated, and people have been known to develop migraines and cluster headaches which in the end have them bowing to god’s of porcelain in the throne room finally succumbing to the idea that perhaps it isn’t wise to resolve this paradox but leave it for that day when we no longer see through a glass darkly. We can resist.
This is also the only occasion in scripture, where God even remotely allows for himself to be identified by something of the female gender, and here it is but a comparison. God calls, he wants to gather us under his wings. He calls and calls, but man will not. Some of course do. But this should be the church’s approach with the gospel too. We are his voice in this world. It is not for us to go running people off, but always and gently calling to repentance, always and gently proclaiming the gospel. There is a time for rebuke and refutation, but always the goal must be to get those chicks under the wings of the hen, the mother, the church where they can know the Grace of God in the sacraments.