Jesus (shortly after His resurrection) taught a large gathering of the descendants of Lehi in the Americas how and why the Sacrament should be performed.
“And when the disciples had come with bread and wine, he took of the bread and brake and blessed it; and he gave unto the disciples and commanded that they should eat. And when they had eaten and were filled, he commanded that they should give unto the multitude. And when the multitude had eaten and were filled, he said unto the disciples: Behold there shall one be ordained among you, and to him will I give power that he shall break bread and bless it and give it unto the people of my church, unto all those who shall believe and be baptized in my name. And this shall ye always observe to do, even as I have done, even as I have broken bread and blessed it and given it unto you. And this ye shall do in remembrance of my body, which I have shown unto you. And it shall be a testimony unto the Father that ye do always remember me. And if ye do always remember me ye shall have my Spirit to be with you.” (3 Nephi 18:3-7)
“And it came to pass that when he said these words, he commanded his disciples that they should take of the wine of the cup and drink of it, and that they should also give unto the multitude that they might drink of it. And it came to pass that they did so, and did drink of it and were filled; and they gave unto the multitude, and they did drink, and they were filled. And when the disciples had done this, Jesus said unto them: Blessed are ye for this thing which ye have done, for this is fulfilling my commandments, and this doth witness unto the Father that ye are willing to do that which I have commanded you. And this shall ye always do to those who repent and are baptized in my name; and ye shall do it in remembrance of my blood which I have shed for you, that ye may witness unto the Father that ye do always remember me. And if ye do always remember me ye shall have my Spirit to be with you. And I give unto you a commandment that ye shall do these things. And if ye shall always do these things blessed are ye, for ye are built upon my rock.” (3 Nephi 18:8-12)
-Who has authority to perform the sacrament ordinance in our day?
-How important is it to participate in this ordinance regularly in order to truly center one’s life on the Savior?