This adjective appears in Acts 2:11 during Pentecost, where visiting Jews hear the disciples declaring 'the mighty works of God' in various languages. The term denotes grandeur and magnificence, things worthy of wonder and praise. In the Septuagint, it often translates Hebrew words for God's powerful deeds in history — creation, exodus, conquest. The Pentecost crowd's amazement stems not just from the linguistic miracle but from hearing God's great acts proclaimed in their native tongues, fulfilling Joel's prophecy about the Spirit's outpouring and reversing the curse of Babel.