Matthew 23:39

Quoted from Psalm 118:26, 

Therein the Hebrew phrase "ברכנוכם" (barekhnukhem) is translated as "we have blessed you all" or "we bless you all." It is a plural form, meaning that the speakers (we) are blessing the listeners (you, plural).

• "ברך" (barakh) means "to bless."
• The suffix "נוּ" (nu) indicates "we" (first person plural).
• The last suffix "כֶם" (khem) indicates "you" (second person masculine plural).

Therefore, "ברכנוכם" combines these elements to convey the action of "we have blessed you all."