Mark 12:30

Young's Literal Translation 1898

and thou shalt love the Lord thy God out of all thy heart, and out of thy soul, and out of all thine understanding, and out of all thy strength--this is the first command;

Cross References

Deuteronomy 6:4

`Hear, O Israel, Jehovah our God is one Jehovah;

Deuteronomy 6:5

and thou hast loved Jehovah thy God with all thy heart, and with all thy soul, and with all thy might,