"And there were no contentions, save it were a few that began to preach, endeavoring to prove by the scriptures that it was no more expedient to observe the law of Moses. Now in this thing they did err, having not understood the scriptures. But it came to pass that they soon became converted, and were convinced of the error which they were in, for it was made known unto them that the law was not yet fulfilled, and that it must be fulfilled in every whit; yea, the word came unto them that it must be fulfilled; yea, that one jot or tittle should not pass away till it should all be fulfilled; therefore in this same year were they brought to a knowledge of their error and did confess their faults." (3 Nephi 1:24-15)
Jesus said that He did not come to abolish the Torah or the Prophets but to fulfill them. In Israelite culture to fulfill the Torah is to observe God's commandments as given in the Torah and to correctly interpret them. In addition, he also warned his disciples not to annul a commandment or to dissuade others from observing the commandments.
"Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfil. For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled. Whosoever therefore shall break one of these least commandments, and shall teach men so, he shall be called the least in the kingdom of heaven: but whosoever shall do and teach them, the same shall be called great in the kingdom of heaven." (Matthew 5:17-19)
"And one of the scribes came, and having heard them reasoning together, and perceiving that he had answered them well, asked him, Which is the first commandment of all?
And Jesus answered him, The first of all the commandments is, Hear, O Israel; The Lord our God is one Lord: 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.
And the second is like, namely this, Thou shalt love thy neighbour as thyself. There is none other commandment greater than these.
And the scribe said unto him, Well, Master, thou hast said the truth: for there is one God; and there is none other but he: And to love him with all the heart, and with all the understanding, and with all the soul, and with all the strength, and to love his neighbour as himself, is more than all whole burnt offerings and sacrifices.
And when Jesus saw that he answered discreetly, he said unto him, Thou art not far from the kingdom of God. And no man after that durst ask him any question." (Matthew 12:28-34)
