Matthew 6:6κλείσας
But when you pray, go into your inner room, shut your door, and pray to your Father, who is unseen. And your Father, who sees what is done in secret, will reward you.
Luke 4:25ἐκλείσθη
But I tell you truthfully that there were many widows in Israel in the time of Elijah, when the sky was shut for three and a half years and great famine swept over all the land.
John 20:19κεκλεισμένων
It was the first day of the week, and that very evening, while the disciples were together with the doors locked for fear of the Jews, Jesus came and stood among them. “Peace be with you!” He said to them.
Acts 5:23κεκλεισμένον
“We found the jail securely locked, with the guards posted at the doors; but when we opened them, we found no one inside.”
1 John 3:17κλείσῃ
If anyone with earthly possessions sees his brother in need, but withholds his compassion from him, how can the love of God abide in him?
Revelation 3:8κλεῖσαι
I know your deeds. Behold, I have placed before you an open door, which no one can shut. I know that you have only a little strength, yet you have kept My word and have not denied My name.

Abbott-Smith

κλείω
[in LXX chiefly for סָגַר ;]
to shut: θύραν, Mat.6:6; τ. ἄβυσσον, Rev.20:3; pass., θύρα, Mat.25:10, Luk.11:7 (pl.), Jhn.20:19, 26, Act.21:30; δεσμωτήριον, Act.5:23; πυλῶνες, Rev.21:25. Metaphorical, τ. οὐρανόν, Luk.4:25, Rom.11:6; τ. σπλάγχνα, 1Jn.3:17; τ. βασιλείαν, Mat.23:14; id. absol., Rev.3:7; τ. θύραν, Rev.3:8. (cf. ἀπο-, ἐκ-, κατα-, συν-κλείω.) †
(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.