3 Nephi 18

As the Savior instituted the sacrament amongst the Nephites -

"...he took of the bread and brake and blessed it; and he gave unto the Disciples and commanded that they should eat.
4 And when they had eaten and were filled, he commanded that they should give unto the multitude." (Book of Mormon 3 Nephi 18:3 - 4)

And when the multitude had eaten it is recorded that they "were filled". The first impression may be that they had eaten until they were full. But I don't believe that is what was meant when it was written they "were filled". As the Savior shared the teachings He had given to those at Jerusalem, He said -

"...blessed are all they who do hunger and thirst after righteousness, for they shall be filled with the Holy Ghost." (Book of Mormon 3 Nephi 12:6)

It is with the sacred ordinance of the sacrament that we should "hunger and thirst after righteousness". As the Savior administered the sacrament to the Nephites the second time-

"...he said unto them: He that eateth this bread eateth of my body to his soul; and he that drinketh of this wine drinketh of my blood to his soul; and his soul shall never hunger nor thirst, but shall be filled.
9 Now, when the multitude had all eaten and drunk, behold, they were filled with the Spirit..." (Book of Mormon 3 Nephi 20:8 - 9)

The Holy Ghost satisfies the hunger and thirst for righteousness. As we covenant to -

"...that [we] are willing to take upon them the name of thy Son, and always remember him, and keep his commandments which he hath given [us]..." (Book of Mormon Moroni 4:3)

"...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." (Book of Mormon 3 Nephi 18:7)

With the partaking of the sacrament as intended, we should be filled with the Holy Ghost. Elder Marion G. Romney said -

“...Now partaking of the sacrament is not to be a mere passive experience. We are not to remember the Lord’s suffering and death only as we may remember some purely secular historical event. Participating in the sacrament service is meant to be a vital and a spiritualizing experience...." (Conference Report, Apr. 1946, pp. 39–40)

We must come with a repentant heart, with a renewed desire and sincere witness to keep His commandments. President David O. Mckay taught that when we pay the spiritual price of repentance, we reap the blessings of receiving the Holy Ghost. He said -

“No more sacred ordinance is administered in the Church of Christ than the administration of the sacrament. . . .

There are three things fundamentally important associated with the administration of the sacrament. The first is self-discernment. It is introspection. ‘This do in remembrance of me,’ but we should partake worthily, each one examining himself with respect to his worthiness.

Secondly, there is a covenant made; a covenant even more than a promise. . . .

Thirdly, there is another blessing, and that is a sense of close relationship with the Lord. There is an opportunity to commune with oneself and to commune with the Lord. . . .

Brethren, we recommend that we surround this sacred ordinance with more reverence, with perfect order, that each one who comes to the house of God may meditate upon his goodness and silently and prayerfully express appreciation for God’s goodness. Let the sacrament hour be one experience of the day in which the worshiper tries at least to realize within himself that it is possible for him to commune with his God.

Great events have happened in this Church because of such communion, because of the responsiveness of the soul to the inspiration of the Almighty. I know it is real. . . .

But the lesson I wish to leave tonight is: Let us make that sacrament hour one of the most impressive means of coming in contact with God’s spirit. Let the Holy Ghost, to which we are entitled, lead us into his presence, and may we sense that nearness, and have a prayer offered in our hearts which he will hear” (in Conference Report, Apr. 1946, pp. 112, 114, 116)."