The noun form expressing the quality of persistent continuance without giving up. Paul uses it in Ephesians 6:18 regarding prayer: pray at all times in the Spirit, with all perseverance and petition for all the saints. The noun captures sustained, persistent prayer—not one-time requests but ongoing, steady intercession that doesn't quit when answers don't come immediately. Perseverance in prayer demonstrates faith that keeps asking, keeps seeking, keeps knocking despite delayed response.