And thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind, and with all thy strength: this is the first commandment.
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Mark 12:28-32
Other Bible passages linked to this one, most cited first.
And thou shalt love the LORD thy God with all thine heart, and with all thy soul, and with all thy might.
Authorship: the book itself or Christian tradition. Approximate dates, as in Carson and Moo, An Introduction to the New Testament, and Longman and Dillard, An Introduction to the Old Testament.