Sometimes they look human
In several Bible accounts, angels look so much like ordinary people that they are not recognised at first. Abraham saw three visitors near the oaks of Mamre, and two of them later arrived at Sodom, where the text identifies them as angels (Genesis 18:2; Genesis 19:1). They could speak, eat the meal Abraham prepared, and be mistaken for human travellers.
That helps explain the encouragement to show hospitality to strangers. Some people, Hebrews says, have welcomed angels without realising who they were (Hebrews 13:2). So an angel in the Bible is not always pictured with visible wings, a halo, or blazing light.
Be not forgetful to entertain strangers: for thereby some have entertained angels unawares.
Sometimes their glory is overwhelming
Other appearances are anything but ordinary. At Jesus’ resurrection, an angel came with an earthquake, and Matthew describes an appearance as brilliant as lightning, with clothing as white as snow (Matthew 28:2-3). The guards were terrified, which is a very human response to a sudden display of God’s heavenly glory.
Luke also describes two heavenly messengers at the empty tomb in shining garments (Luke 24:4). Angels often begin by calming frightened people. Their brightness is not presented as a costume or a fantasy detail. It points to the holiness and splendour of the God they serve.
And, behold, there was a great earthquake: for the angel of the Lord descended from heaven, and came and rolled back the stone from the door, and sat upon it. His countenance was like lightning, and his raiment white as snow:
What about wings and strange creatures?
Wings do appear in biblical visions, though not every angel is described this way. Isaiah saw seraphim, heavenly beings attending God’s throne, each with six wings (Isaiah 6:2). The name seraphim is a Hebrew word connected with burning, which fits the fiery holiness of Isaiah’s vision.
Ezekiel also saw extraordinary living creatures with multiple faces and wings in a vision of God’s glory (Ezekiel 1:5-8; Ezekiel 1:9-11). Later, Ezekiel identifies the living creatures he had seen as cherubim (Ezekiel 10:15). These scenes are full of symbolic, visionary imagery. They show God’s majesty, watchfulness, and power, rather than giving us a simple field guide to every angel.
Above it stood the seraphims: each one had six wings; with twain he covered his face, and with twain he covered his feet, and with twain he did fly.
The Bible keeps the focus on God
It is natural to wonder what angels look like. Still, Scripture directs attention beyond them. Angels are God’s servants, sent to minister to those who will inherit salvation (Hebrews 1:14). They bring messages, protect according to God’s will, and rejoice when people turn to God (Luke 15:10).
So the honest answer is that angels may appear human, radiant, or, in prophetic visions, wonderfully unlike anything familiar. We need not force every account into one picture. Read the passages in their setting and let their central message stand: God is near, powerful, and active, even when his servants are unseen.