Noun
solemn vow (plural solemn vows)
(Christianity) A deliberate and free promise made to God about a possible and better good, taken by an individual during or after novitiate in a Catholic religious institute.
A burning itch to know is higher than a solemn vow to pursue truth. To feel the burning itch of curiosity requires both that you be ignorant, and that you desire to relinquish your ignorance. Eliezer Yudkowsky
The oath of renunciation and allegiance is a solemn vow taken by thousands of immigrants each year to become a United States citizen. The oath is the fundamental statement of allegiance to the United States, and this allegiance is what unites America. Jim Ryun
In three days," he continued, "I will be your husband. I will take a solemn vow to protect you until death do us part. Do you understand what that means?" "You'll save me from marauding minotaurs? Julia Quinn
Every couple makes that solemn vow before sealing their commitment to a life together with a kiss. Source: Internet
I have been an Anglican for the past 89 years and believe in the Bible as written; marriage is a solemn vow taken between a man and a woman. Source: Internet
On 17 November 1991 he gave his solemn vow in the Congregation of Clerics Regular of St. Paul, and on 10 March 1993 he was ordained a priest. Source: Internet