First Lesson: 1 Samuel 16:1 – 13

And the Lord said unto Samuel, How long wilt thou mourn for Saul, seeing I have rejected him from reigning over Israel? fill thine horn with oil, and go, I will send thee to Jesse the Bethlehemite: for I have provided me a king among his sons.
And Samuel said, How can I go? if Saul hear it, he will kill me. And the Lord said, Take an heifer with thee, and say, I am come to sacrifice to the Lord.
And call Jesse to the sacrifice, and I will shew thee what thou shalt do: and thou shalt anoint unto me him whom I name unto thee.
And Samuel did that which the Lord spake, and came to Bethlehem. And the elders of the town trembled at his coming, and said, Comest thou peaceably?
And he said, Peaceably: I am come to sacrifice unto the Lord: sanctify yourselves, and come with me to the sacrifice. And he sanctified Jesse and his sons, and called them to the sacrifice.
And it came to pass, when they were come, that he looked on Eliab, and said, Surely the Lord’s anointed is before him.
But the Lord said unto Samuel, Look not on his countenance, or on the height of his stature; because I have refused him: for the Lord seeth not as man seeth; for man looketh on the outward appearance, but the Lord looketh on the heart.
Then Jesse called Abinadab, and made him pass before Samuel. And he said, Neither hath the Lord chosen this.
Then Jesse made Shammah to pass by. And he said, Neither hath the Lord chosen this.
Again, Jesse made seven of his sons to pass before Samuel. And Samuel said unto Jesse, The Lord hath not chosen these.
And Samuel said unto Jesse, Are here all thy children? And he said, There remaineth yet the youngest, and, behold, he keepeth the sheep. And Samuel said unto Jesse, Send and fetch him: for we will not sit down till he come hither.
And he sent, and brought him in. Now he was ruddy, and withal of a beautiful countenance, and goodly to look to. And the Lord said, Arise, anoint him: for this is he.
Then Samuel took the horn of oil, and anointed him in the midst of his brethren: and the Spirit of the Lord came upon David from that day forward. So Samuel rose up, and went to Ramah.

Canticle: Magnificat. St. Luke 1:46-55

My soul doth magnify the Lord, * and my spirit hath rejoiced in God my Saviour.
For he hath regarded * the lowliness of his handmaiden.
For behold, from henceforth * all generations shall call me blessed.
For he that is mighty hath magnified me; * and holy is his Name.
And his mercy is on them that fear him * throughout all generations.
He hath showed strength with his arm; * he hath scattered the proud in the imagination of their hearts.
He hath put down the mighty from their seat, * and hath exalted the humble and meek;.
He hath filled the hungry with good things; * and the rich he hath sent empty away.
He remembering his mercy hath holpen his servant Israel; * as he promised to our forefathers, Abraham and his seed, for ever.
Glory be.

Second Lesson: 1 John 2:15 – End

Love not the world, neither the things that are in the world. If any man love the world, the love of the Father is not in him.
For all that is in the world, the lust of the flesh, and the lust of the eyes, and the pride of life, is not of the Father, but is of the world.
And the world passeth away, and the lust thereof: but he that doeth the will of God abideth for ever.
Little children, it is the last time: and as ye have heard that antichrist shall come, even now are there many antichrists; whereby we know that it is the last time.
They went out from us, but they were not of us; for if they had been of us, they would no doubt have continued with us: but they went out, that they might be made manifest that they were not all of us.
But ye have an unction from the Holy One, and ye know all things.
I have not written unto you because ye know not the truth, but because ye know it, and that no lie is of the truth.
Who is a liar but he that denieth that Jesus is the Christ? He is antichrist, that denieth the Father and the Son.
Whosoever denieth the Son, the same hath not the Father: he that acknowledgeth the Son hath the Father also.
Let that therefore abide in you, which ye have heard from the beginning. If that which ye have heard from the beginning shall remain in you, ye also shall continue in the Son, and in the Father.
And this is the promise that he hath promised us, even eternal life.
These things have I written unto you concerning them that seduce you.
But the anointing which ye have received of him abideth in you, and ye need not that any man teach you: but as the same anointing teacheth you of all things, and is truth, and is no lie, and even as it hath taught you, ye shall abide in him.
And now, little children, abide in him; that, when he shall appear, we may have confidence, and not be ashamed before him at his coming.
If ye know that he is righteous, ye know that every one that doeth righteousness is born of him.

Canticle: Nunc dimittis. St. Luke 2:29-32

LORD, now lettest thou thy servant depart in peace, * according to thy word.
For mine eyes have seen * thy salvation,
Which thou hast prepared * before the face of all people;
To be a light to lighten the Gentiles, * and to be the glory of thy people Israel.
Glory be.

A Homily by St. Augustine the Bishop:

Come unto me, all ye that labour. And wherefore labour we all, but because we are frail, sickly, mortal men, burdened with earthen vessels which distress us? But if these fleshly vessels be distressful, let the open expanse of love be free and wide. Come unto me, all ye that labour. And why? That we may labour no more. His promise is an instant promise, for he calleth such as are labouring. Perchance they will ask him what shall be their reward? And I, saith he, will give you rest. Take my yoke upon you, and learn of me. And he doth not say, Learn of me how to make the world; or how to create all things visibile and invisible ; or even how to work wonders on earth, and raise the dead. Rather, he saith, Learn of me for this reason; because I am meek and humble of heart.

Wilt thou be great? Begin by being little. Dost thou think to raise up a lofty building? Think first how lowly and deep the foundation must be. For the greater soever, and the more massive, the building is planned to be, so much the deeper must the foundation be placed. When the structure is finished, it towereth heavenward. But he that laid the foundation, first went down very low into the earth. The building must therefore be low before it is high. Yea, it can be crowned with its lofty roof only because it had a beginning deep downward.

From the Roman Breviary for today.

And the Apostles Creed and the rest of the office.

Collect:

O GRANT, we beseech thee, Almighty God: that we who on this day prevent the feast of thy holy Apostle Saint Matthias, may by the devout observance of the same increase in godliness to the attainment of everlasting salvation. Through Jesus Christ, Thy Son our Lord, who liveth and reigneth with THee in the Unity of the Holy Ghost, ever One God, world without end. Amen.