Rashi on the Former Prophets

The Beis Lechemite. From Beis Lechem. The rule of every noun composed of two words, e.g., Beis Lechem, Beis Shemesh, Beis Eil, Kiryas Arba, if one wishes to add a 'ה' he adds it between the two words, e.g., Kiryas Ha'arba, Beis Ha'Eili, Beis Ha'lachmi.

Hurried. Hurried out toward him.

He said, "Surely, before Adonoy is His annointed." He said to himself, 'Surely, it is true that this one is fitting for the kingship.'

Do not look at his appearance. Upon the beauty of his stature.
For I have rejected him. Because he is a quick tempered person, as it is stated, 'And Eliov became angry with Dovid.'
For it is not as man perceives it. Even though you called yourself a seer, when you said to Shaul, 'I am the seer,' here I am informing you that you do not see.

Yishay brought Shammoh. That is שַׁמְעָא.

The youngest one is still left. The youngest one is left.
We will not sit. We will not sit to eat; every instance of sitting for a meal is called הֲסִבׇּה [leaning].

And a spirit of Adonoy passed over. A spirit of strength.

Your servants who are before you. Behold, your servants are before you, who will carry out your orders.

One of the youths. The special one, [i.e.,] Do'eg, the Edomite.
Knows how to play. His entire intention was to induce Shaul's evil eye into Dovid, that he envy him.