The Christian Family (The Small Catechism)

2. Christian Family Life Is The Only Hope Of The World.

Because of these undeniable facts, I affirm that Christian Family Life is the only Hope of the World.
In our second text, which is a part of the account of God’s covenant made with his people on the occasion of the giving of His Law, God Himself tells us what the consequences are when men, whether as individuals, or families, or nations, depart from the Lord. He tells us that it means the introduction of “a root that beareth gall and wormwood.” Such people bring on themselves, justly and inevitably, the wrath and punishment of Almighty God. And, sooner or later, it means the downfall of that man, or family, or nation. And this fall comes because men themselves despise and neglect the elements which make for safety and perpetuity, and allow the introduction of the elements which can ultimately end only in decay and dissolution.
The family circle is the primary training-school for the cultivation of all the virtues.

“Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, what soever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there be any virtue, if there be any praise, think on these things” (Phil. 4:8).

 https://www.lutheranlibrary.org/a11-the-christian-family-the-small-catechism/