Matthew 7:10ὄφιν
Or if he asks for a fish, will give him a snake?
Mark 16:18ὄφεις
they will pick up snakes with their hands, and if they drink any deadly poison, it will not harm them; they will lay their hands on the sick, and they will be made well.”
Luke 10:19ὄφεων
Behold, I have given you authority to tread on snakes and scorpions, and over all the power of the enemy. Nothing will harm you.
John 3:14ὄφιν
Just as Moses lifted up the snake in the wilderness, so the Son of Man must be lifted up,
1 Corinthians 10:9ὄφεων
We should not test Christ, as some of them did, and were killed by snakes.
Revelation 12:9ὄφις
And the great dragon was hurled down—that ancient serpent called the devil and Satan, the deceiver of the whole world. He was hurled to the earth, and his angels with him.

Abbott-Smith

ὄφις, -εως, ὁ
[in LXX chiefly for נָחָשׁ ;]
a serpent, snake: Mat.7:10 Mrk.16:18, Luk.10:19 11:11, Jhn.3:14, 1Co.10:9, Rev.9:19; as typical of wisdom and cunning, Mat.10:16 23:23, 2Co.11:3 (cf. Gen.31:1-55); of Satan (cf. Gen.3:1, Wis.2:23-24, 4Ma.18:8), Rev.12:9, 14 12:11 20:2.†
(AS)

Sources: Abbott-Smith’s Manual Greek Lexicon of the New Testament (1922, public domain) and glosses from STEPBible TBESG (CC BY 4.0); STEPBible TAGNT (Greek New Testament, CC BY 4.0); the Berean Standard Bible (public domain). Reformatted by Word Study, wording unchanged. All sources and licenses.