1. Dogma

The Foundation: Cannot be altered.

– Core Faith

– Unchangeable Truths

– Divinely Revealed

– Required Belief

Examples:

– The Blessed Trinity (God as Father, Son, Holy Spirit)

– The Real Presence (Jesus in the Eucharist)

– The Resurrection of Christ

2. Doctrine

The Structure: Our growing understanding.

– Official Teachings

– Develops over time

– Matters of Faith & Morals

– Religious Submission of Intellect & Will

Examples:

– Catholic Social Teaching (Human Dignity)

– Bioethics (Respect for Life)

– The Prohibition of the Death Penalty

3. Discipline

The Rules: To help us grow in holiness.

– Church Laws & Practices

– Fully changeable

– Guides Spiritual Life & Church Order

– Obedience Required

Examples:

– Priestly Celibacy (Latin Rite)

– Fasting & Abstinence (e.g., Ash Wednesday, Good Friday)

– Liturgical Forms (How Mass is celebrated)

Source: Catechists of St. Francis Xavier