Mark 12:29

12:29 Jesus answered, “The most important is: ‘Listen, Israel, the Lord our God, the Lord is one.

Mark 12:32

12:32 The expert in the law said to him, “That is true, Teacher; you are right to say that he is one, and there is no one else besides him. ¹ 

¹ sn A quotation from Deut 4:35.