Many quotes in the first act of the play address the traits you mention.
First of all for bravery/courage, Duncan asks for a report of Macbeth's and Banquo's courage when a fresh assault had begun by the "Norweyan lord." The Sergeant tells Duncan they were not bothered by this new attack comparing their bravery to an eagle being bothered by a sparrow or a lion being bothered by a rabbit. In fact, the more danger they encountered, the harder they fought as cannons overcharged:
As sparrows eagles, or the hare the lion. If I say sooth, I must report they were
As cannons overcharged with double cracks, so they
Doubly redoubled strokes upon the foe (act 1, scene 2)
Next, for trust, Duncan decides to reward Macbeth for his fearlessness in battle and their victory by bestowing the title upon him of Thane of Cawdor which is a great honor. Giving Macbeth this title illustrates his trust:
No more that thane of Cawdor shall deceive
Our bosom interest: go pronounce his present death,
And with his former title...
(The entire section contains 2 answers and 894 words.)