Agnus is a Latin word meaning 'LAMB' and is used in Christian theology to refer to Jesus Christ. The term Agnus can be broken down into three parts: DEI (3 letters), ECCE (4 letters), and LAMB (4 letters). DEI is an abbreviation for the Latin phrase 'Deus in Excelsis, ' which translates to 'God on High.' ECCE is an abbreviation for the Latin phrase 'ECCE Agnus Dei, ' which translates to 'Behold the LAMB of God.' Finally, LAMB is an acronym for the phrase 'LAMB of God, ' which is another name for Jesus Christ. Together, these three words form the term Agnus, which is used to refer to Jesus Christ in Christian theology.