The Hebrew word etsba (אֶצְבַּע) means finger or toe. It appears in both literal and figurative contexts. Literally, it refers to the digits of the hand or foot. Figuratively, the 'finger of God' (etsba Elohim) became a powerful expression of divine power and direct divine action.
The 'finger of God' is one of Scripture's most vivid divine metaphors. When the Egyptian magicians witnessed the plagues they confessed 'This is the finger of God!' The Ten Commandments were written by God's own finger. Jesus declared that He cast out demons 'by the finger of God,' signaling the arrival of the Kingdom. The etsba of God thus represents the direct, unmistakable intervention of the divine — impossible to misattribute to human power.