Deuteronomy 6:5
3 Pay attention, Israel, and be careful to do this so that it may go well with you and that you may increase greatly in number—as the Lord, the God of your ancestors, said to you, you will have a land flowing with milk and honey. 4 Hear, O Israel: The Lord is our God, the Lord is one! 5 You must love the Lord your God with your whole mind, your whole being, and all your strength. 6 These words I am commanding you today must be kept in mind, 7 and you must teach them to your children and speak of them as you sit in your house, as you walk along the road, as you lie down, and as you get up.
Tobit 1:12
10 After I was carried away captive to Assyria and came as a captive to Nineveh, everyone of my kindred and my people ate the food of the Gentiles, 11 but I kept myself from eating the food of the Gentiles. 12 Because I was mindful of God with all my heart, 13 the Most High gave me favor and good standing with Shalmaneser, and I used to buy everything he needed. 14 Until his death I used to go into Media, and buy for him there. While in the country of Media I left bags of silver worth ten talents in trust with Gabael, the brother of Gabri.
Notes and References
"... There are five discernable echoes of Deuteronomy 6:5 in Tobit, words or phrases that refer to loving God or being mindful of God with all one’s heart, soul, or strength. What is most impressive is not so much each individual allusion to Deuteronomy 6, but the cumulative force of all five passages coupled with the literary and theological context of Deuteronomy 6. In a description of his own exemplary piety – here, his adherence to the dietary laws even when his fellow Jews eat the food of the Gentiles – Tobit declares, “And I remembered God with all my soul” Tobit 1:12; translation mine) ..."
Baron, Lori Ann Robinson The Shema in John’s Gospel Against its Backgrounds in Second Temple Judaism (pp. 92-93) Duke University, 2015