1Pet 2, 11 Keep away from worldly desires

(1Pet 2, 11) Keep away from worldly desires
[11] Beloved, I urge you as aliens and sojourners to keep away from worldly desires that wage war against the soul.

(CCC 1606) Every man experiences evil around him and within himself. This experience makes itself felt in the relationships between man and woman. Their union has always been threatened by discord, a spirit of domination, infidelity, jealousy, and conflicts that can escalate into hatred and separation. This disorder can manifest itself more or less acutely, and can be more or less overcome according to the circumstances of cultures, eras, and individuals, but it does seem to have a universal character. (CCC 1607) According to faith the disorder we notice so painfully does not stem from the nature of man and woman, nor from the nature of their relations, but from sin. As a break with God, the first sin had for its first consequence the rupture of the original communion between man and woman. Their relations were distorted by mutual recriminations (Cf. Gen 3:12); their mutual attraction, the Creator's own gift, changed into a relationship of domination and lust (Cf. Gen 2:22; 3:16b); and the beautiful vocation of man and woman to be fruitful, multiply, and subdue the earth was burdened by the pain of childbirth and the toil of work (Cf. Gen 1:28; 3:16-19). (CCC 1608) Nevertheless, the order of creation persists, though seriously disturbed. To heal the wounds of sin, man and woman need the help of the grace that God in his infinite mercy never refuses them (Cf. Gen 3:21). Without his help man and woman cannot achieve the union of their lives for which God created them "in the beginning." (CCC 1621) In the Latin Rite the celebration of marriage between two Catholic faithful normally takes place during Holy Mass, because of the connection of all the sacraments with the Paschal mystery of Christ (Cf. SC 61). In the Eucharist the memorial of the New Covenant is realized, the New Covenant in which Christ has united himself for ever to the Church, his beloved bride for whom he gave himself up (Cf. LG 6). It is therefore fitting that the spouses should seal their consent to give themselves to each other through the offering of their own lives by uniting it to the offering of Christ for his Church made present in the Eucharistic sacrifice, and by receiving the Eucharist so that, communicating in the same Body and the same Blood of Christ, they may form but "one body" in Christ (Cf. 1 Cor 10:17). (CCC 1622) "Inasmuch as it is a sacramental action of sanctification, the liturgical celebration of marriage… must be, per se, valid, worthy, and fruitful" (FC 67). It is therefore appropriate for the bride and groom to prepare themselves for the celebration of their marriage by receiving the sacrament of penance.