The Hebrew word mopheth refers to a wonder, miraculous sign, or portent — a divine act that surpasses ordinary experience and functions as a token of God's power and intentions. It frequently appears alongside the word oth (sign) in the phrase 'signs and wonders,' particularly in relation to the Exodus and God's mighty acts.
Mopheth is a key term in the theology of divine revelation through mighty acts. The plagues of Egypt were God's mophethim — wonders that demonstrated His absolute sovereignty over Egypt's gods and pharaoh. These signs were not merely displays of power but were theological declarations: YHWH alone is God. The New Testament inherits this pattern — Jesus' miracles are called 'signs and wonders' (John 4:48; Acts 2:22) that testify to His divine identity. The ultimate 'wonder' is the resurrection.