Godparent (noun)

1. A person who acts as a sponsor for a child at baptism.
2. A person who stands as a mentor or guide to another.

Origin:

From middle english godfader, from old english godfæder, equivalent to god +‎ father.

Examples:

1. My godmother was there for me when my parents passed away.
2. The godparent is responsible for the spiritual guidance of the child.
3. The role of godparent is an important one in many religious traditions.
4. She was honored to be asked to be her best friend"s child"s godparent.
5. The godparent is expected to set a good example for the child.