The teaching is based on the Scriptures lessons for Sunday, Trinity 14.
Proverbs 4:10-23
Psalm 119:9-16
Galatians 5:16-25
Luke 17:11-19
The quotes from Martin Luther:
Meaning to the First Article of the Apostle’s Creed, Small Catechism
I believe that God has made me and all creatures; that He has given me my body and soul, eyes, ears, and all my limbs, my reason, and all my senses, and still preserves them; in addition thereto, clothing and shoes, meat and drink, house and homestead, wife and children, fields, cattle, and all my goods;
that He provides me richly and daily with all that I need to support this body and life, protects me from all danger, and guards me and preserves me from all evil; and all this out of pure, fatherly, divine goodness and mercy, without any merit or worthiness in me; for all which I owe it to Him to thank, praise, serve, and obey Him.
This is most certainly true.
Meaning to the First Commandment, Large Catechism
24] But let this be said to the simple, that they may well note and remember the meaning of this commandment, namely, that we are to trust in God alone, and look to Him and expect from Him naught but good, as from one who gives us body, life, food, drink, nourishment, health, protection, peace, and all necessaries of both temporal and eternal things. He also preserves us from misfortune, and if any evil befall us, delivers and rescues us, so that it is God alone (as has been sufficiently said) from whom we receive all good, and by whom 25] we are delivered from all evil.
Hence also, I think, we Germans from ancient times call God (more elegantly and appropriately than any other language) by that name from the word Good, as being an eternal fountain which gushes forth abundantly nothing but what is good, and from which flows forth all that is and is called good.
Triglot Concordia: Concordia Publishing House, 1921. These texts are in the public domain and may be freely copied.