Luke 2:8-10 And there were in the same country shepherds abiding in the field, keeping watch over their flock by night. And, lo, the angel of the Lord came upon them, and the glory of the Lord shone round about them: and they were sore afraid. And the angel said unto them, Fear not: for, behold, I bring you good tidings of great joy, which shall be to all people.
1 Samuel 16::7,10-11 But the LORD said to Samuel, "Do not look on his appearance or on the height of his stature, … for the LORD sees not as man sees; man looks on the outward appearance, but the LORD looks on the heart." … And Jesse made seven of his sons pass before Samuel. And Samuel said to Jesse, "The LORD has not chosen these." And Samuel said to Jesse, "Are all your sons here?" And he said, "There remains yet the youngest, but behold, he is keeping the sheep." And Samuel said to Jesse, "Send and fetch him
And So God chose David….
1Cor 1:27-29 but God chose what is foolish in the world to shame the wise, God chose what is weak in the world to shame the strong, God chose what is low and despised in the world, even things that are not, to bring to nothing things that are, so that no human being might boast in the presence of God.
What does this mean? The rich trust in their riches. The strong trust in their strenght. The wise trust in their wisdom. Talented trust in their ability. Its not hard to complete the list, and when you do, you have a pantheon of all the other gods that we worship and believe in. Not only are they too busy to hear such news - but even if they did hear it, they would not believe that they needed such news. If you have an other god, the only thing that can bring you to repentance is when that other god is brought to nothing.
You see, the Christ of Christmas came for poor miserable sinners. Poor miserable sinners know they can't save themselves, and know that they need a Savior. When they hear that the Savior is come, they rejoice with great joy - because they knew that they had not earned or deserved it - but never the less, God has had mercy upon them, and God in grace gave them what they needed. God in mercy & grace gives us what we need. The meek, despised and lowly are not meritorius because of what they suffer, rather, since they know they are weak and poor, they know they need a Savior, because they know they are poor miserable sinners.
The point is not that the shepherds had some special merit, or had done something to make them worthy. God chose the shepherds because the good tidings of great joy, the birth of the Savior was for all people, even for lowly shepherds.
And not only did the shepherds hear the good tidings, they also went to see - a sort of object lesson in what Jesus means when he says: Blessed are they that hear the word of God and keep it. And they found that everything was as the angels had told them, and then, without anyone telling them what they needed to do - they did it - they made known what they had learned - that the Savior is come - and all who heard it wondered.