In this passage, God speaks through Jeremiah to convey the impending judgment on the people of Judah due to their continuous rebellion and idolatry. The imagery of smashing parents and children together emphasizes the totality and severity of the coming destruction. This is not a reflection of God's lack of love, but rather a demonstration of His holiness and justice. The absence of pity, mercy, or compassion in this context highlights the seriousness of sin and the consequences that follow when God's laws are repeatedly ignored.
This message serves as a stark warning to the people to turn away from their sinful ways and return to God. It reflects the broader biblical theme that while God is loving and merciful, He is also just and righteous. His desire is for His people to live in harmony with His will, and when they stray, He calls them back through prophets like Jeremiah. The verse is a sobering reminder of the importance of repentance and the need to heed God's warnings to avoid the destructive consequences of sin.