This is the 4th most frequent Hebrew word.
כי
The Hebrew word "כי" means "because," "that," or "for," depending on context.
'כי' serves as a conjunction that introduces the clause providing explanation or reason.
אני יודע כי הוא חכם.
I know because he is smart.
In this sentence, 'כי' is used as a conjunction meaning 'that,' introducing a reported speech or clause.
הוא אמר לי כי הוא מתכוון לעזור.
He told me that he intends to help.
'כי' is used as a conjunction meaning 'because' to indicate the cause or reason of the action.