My son, do not let wisdom and understanding out of your sight, preserve sound judgment and discretion; (Proverbs 3:21, NIV)
According to YourDictionary.com, sagacity is the quality of being wise or having good judgment.
Serendipity is an aptitude for making desirable discoveries by accident---or as I call them God-incidences. The unexpected beneficial moments of life.
God's Word is THE book for wisdom in living. Its truths are sound judgments needed to live our lives by.....so, my Serendipity New Testament is a perfect blend of sagaci-TEA and serendipi-TEA! A great cuppa; it provides the unexpected, yet beneficial extra.