Matthew 4:2τεσσεράκοντα
After fasting forty days and forty nights, He was hungry.
Mark 1:13τεσσεράκοντα
and He was there for forty days, being tempted by Satan. He was with the wild animals, and the angels ministered to Him.
Luke 4:2τεσσεράκοντα
where for forty days He was tempted by the devil. He ate nothing during those days, and when they had ended, He was hungry.
Acts 1:3τεσσεράκοντα
After His suffering, He presented Himself to them with many convincing proofs that He was alive. He appeared to them over a span of forty days and spoke about the kingdom of God.
Hebrews 3:10τεσσεράκοντα
Therefore I was angry with that generation, and I said, ‘Their hearts are always going astray, and they have not known My ways.’
Revelation 7:4τεσσεράκοντα
And I heard the number of those who were sealed, 144,000 from all the tribes of Israel:

Abbott-Smith

τεσσεράκοντα (Rec. τεσσαρ-, v, WH, App., 150; M, Pr., 45 f.; Thackeray, Gr., 62 f., 73 f.), οἱ, αἱ, τά, indecl.,
forty: Mat.4:2, Mrk.1:13, Luk.4:2, Jhn.2:20, Act.1:3, al
(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.