Sanctify (verb)

1. To make holy or set apart as sacred; to consecrate.
2. To make pure or clean; to purify.
3. To declare or make legally or morally binding and inviolable.

Origin:

Late middle english: from old french sanctifier, from latin sanctificare, from sanctus "holy".

Examples:

1. The priest sanctified the altar with holy water.
2. He sanctified the union with a traditional wedding ceremony.
3. The act of prayer sanctified the food before the meal.
4. The holy book sanctifies certain days of the week.
5. The act of marriage sanctifies the union between a man and a woman.