Strong's Concordance G57

Original Word: ἄγνωστος
Transliteration: ágnōstos
Phonetic Spelling: ag'-noce-tos'
[ἄγνωστος] from G1 (as negative particle) and G1110; unknown

Usages throughout the bible

Acts 17:23 - For as I passed by, and beheld your devotions, I found an altar with this inscription, TO THE UNKNOWN G57 GOD. Whom therefore ye ignorantly worship, him declare I unto you.