Great Commandment should not be confused with Great Commission.
The Great Commandment (or Greatest Commandment) is a name used in the New Testament to describe the first of two commandments cited by Jesus in 2 Matthew, 2 Mark, and in answer to him in 2 Luke:
Most Christian denominations consider these two commandments as, together, forming the core of the Christian religion.
In the Gospel of Mark, the first verse of the Shema Yisrael (which the first part of the Great Commandment refers to) is included:
See also: Agape and Love of God (Christianity). Matthew Henry sums up the question of which is the great commandment:
Adam Clarke, in his Commentary on the Bible, wrote:
"Thou shalt love the Lord thy God" is interpreted by Rabbi Adin Even-Israel Steinsaltz to mean "Act in such a manner that God will be beloved by all His creatures."[1] Consequently, Israel, being, as the priest-people, enjoined like the Aaronite priest to sanctify the name of God and avoid whatever tends to desecrate it (Lev. xxii. 32), is not only obliged to give his life as witness or martyr for the maintenance of the true faith (see Isa. xliii. 12, μάρτυρες; and Pesik. 102b; Sifra, Emor, ix.), but so to conduct himself in every way as to prevent the name of God from being dishonored by non-Israelites.[2]
Twice every day (during Shacharit and Maariv, the morning and evening prayers) observant Jews recite the Shema Yisrael, which contains the words: "Thou shalt love the Lord thy God with all thine heart, with all thy soul, and with all thy might" (Deut. vi. 5). This verse is interpreted by Rabbi Even-Israel Steinsaltz to enjoin him to willingly surrender life and fortune whenever the cause of God demands it, while it at the same time urges him to make God beloved by all his creatures through deeds of kindness, as Abraham did (Sifre, Deut. 32).[3]
Although only asked about the first commandment, Jesus included the second commandment in his answer. This double reference has given rise to differing views with regard to the relationship that exists between the two commandments, although typically "love thy God" is referred to as "the first and greatest commandment", with "love thy neighbor" being referred to as "the second great commandment". It may simply reflect the "seven rules (Middot) of Hillel", in this case the first one, called Ḳal wa-ḥomer (Hebrew: קל וחומר).
See also: Golden Rule. When asked what the greatest commandment is, the Christian New Testament depicts Jesus answering: "You shall love the Lord your God with all your heart, and with all your soul, and with all your mind," before adding: "‘You shall love your neighbor as yourself.’ There is no other commandment greater than these."[4] Most Christian denominations view these two commandments as, together, forming the core of the Christian religion. The second passage is considered to be a form of the Golden Rule.[5]