Final answer:
The four sacraments received only once are Baptism, Confirmation, Holy Orders, and Marriage, each marking significant life stages or commitments within the church.
Step-by-step explanation:
The four sacraments that are traditionally received only once in a person's life are:
- Baptism - This sacrament is believed to cleanse original sin. It is typically performed shortly after birth due to high infant mortality rates in medieval times.
- Confirmation - It represents the pledge to be a faithful member of the Church and is usually taken in young adulthood.
- Holy Orders - This is the vow taken by new members of the clergy when they are ordained.
- Marriage - This sacrament is perceived to be sanctified by God and is a holy union between two individuals.
While Last Rites are also received only once, they are typically administered shortly before death, rather than at a set stage of life like the other sacraments.