Sirach, Chapter 19, Verse 18-20
18 Fear of the Lord is the beginning of acceptance; and wisdom from him obtains love. 19 Knowledge of the Lord’s commandments is life-giving instruction; those who do what pleases him will harvest the fruit of the tree of immortality. 20 All wisdom is fear of the LORD; and in all wisdom, the observance of the Law.
Being calm under pressure or threat is the ultimate way we can show trust in God. Here are some more verses to ponder on calming down:
Be angry but do not sin; do not let the sun set on your anger, and do not leave room for the devil. (Ep. 4:26-27)
For God did not give us a spirit of cowardice but rather of power and love and self-control. (2Tm. 1:7)
He hushed the storm to silence; the waves of the sea were stilled. They rejoiced that the sea grew calm, that God brought them to the harbor they longed for. (Ps. 107:29-30)
He got into a boat and his disciples followed him. Suddenly a violent storm came up on the sea, so that the boat was being swamped by waves; but he was asleep. They came and woke him, saying, “Lord, save us! We are perishing!” He said to them, “Why are you terrified, O you of little faith?” Then he got up, rebuked the winds and the sea, and there was great calm. The men were amazed and said, “What sort of man is this, whom even the winds and the sea obey?” (Mt. 8:23-27)
Catechism of the Catholic Church
IV. OFFENSES AGAINST THE DIGNITY OF MARRIAGE
Other offenses against the dignity of marriage
2387 The predicament of a man who, desiring to convert to the Gospel, is obliged to repudiate one or more wives with whom he has shared years of conjugal life, is understandable. However polygamy is not in accord with the moral law." [Conjugal] communion is radically contradicted by polygamy; this, in fact, directly negates the plan of God which was revealed from the beginning, because it is contrary to the equal personal dignity of men and women who in matrimony give themselves with a love that is total and therefore unique and exclusive."180 The Christian who has previously lived in polygamy has a grave duty in justice to honor the obligations contracted in regard to his former wives and his children.
2388 Incest designates intimate relations between relatives or in-laws within a degree that prohibits marriage between them. St. Paul stigmatizes this especially grave offense: "It is actually reported that there is immorality among you for a man is living with his father's wife. In the name of the Lord Jesus you are to deliver this man to Satan for the destruction of the flesh." Incest corrupts family relationships and marks a regression toward animality.
2389 Connected to incest is any sexual abuse perpetrated by adults on children or adolescents entrusted to their care. The offense is compounded by the scandalous harm done to the physical and moral integrity of the young, who will remain scarred by it all their lives; and the violation of responsibility for their upbringing.
2390 In a so-called free union, a man and a woman refuse to give juridical and public form to a liaison involving sexual intimacy. The expression "free union" is fallacious: what can "union" mean when the partners make no commitment to one another, each exhibiting a lack of trust in the other, in himself, or in the future? The expression covers a number of different situations: concubinage, rejection of marriage as such, or inability to make long-term commitments. All these situations offend against the dignity of marriage; they destroy the very idea of the family; they weaken the sense of fidelity. They are contrary to the moral law. The sexual act must take place exclusively within marriage. Outside of marriage it always constitutes a grave sin and excludes one from sacramental communion.
2391 Some today claim a "right to a trial marriage" where there is an intention of getting married later. However firm the purpose of those who engage in premature sexual relations may be, "the fact is that such liaisons can scarcely ensure mutual sincerity and fidelity in a relationship between a man and a woman, nor, especially, can they protect it from inconstancy of desires or whim." Carnal union is morally legitimate only when a definitive community of life between a man and woman has been established. Human love does not tolerate "trial marriages." It demands a total and definitive gift of persons to one another.