Jesus was preaching under the Law of Moses to Israel in the 4 gospels, so of course there are many. You can also find complementary passages if you so desire, the most popular is of course John 3:16, but it does not change that fact.
Luke 10
25 And, behold, a certain lawyer stood up, and tempted him, saying, Master, what shall I do to inherit eternal life?
26 He said unto him, What is written in the law? how readest thou?
27 And he answering said, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy strength, and with all thy mind; and thy neighbour as thyself.
28 And he said unto him, Thou hast answered right: this do, and thou shalt live.