Is all his soldiership. But he, sir, had th' election And I, of whom his eyes had seen the proof

30At Rhodes, at Cyprus, and on other grounds Christian and heathen, must be belee’d and calmed By debitor and creditor. This counter-caster He (in good time) must his lieutenant be And I, bless the mark, his Moorship’s ancient." (1.1.28-35)
Context:
Iago was speaking to Rodrigo about the hatred he had for Othello. Iago was very angry that Othello did not grant Iago lieutenant and gave it to Cassio instead of him. Rodrigo was starting to question the trust he had in Iago as he found out that his soulmate, Desdemona married Othello.
Analysis:
This is the inciting incident because this shows that Iago is the antagonist and he is going to play the role of the manipulator. Iago is very angry with Othello, and wants to ruin Othello's life by manipulating others to sabotage Othello's life.  The readers learn that Iago is jealous of Cassio's role in the story and this can lead to a very important theme of jealousy and manipulation in the story. Iago also has his first follower Rodrigo. 

they get into your blood they start burning like hot lava.(3.3.335-340)

Context:
Iago has Othello fooled and he believes everything that he says. Othello will now believe that Desdemona is having an affair with Cassio.
Analysis:
This relates to the inciting incident because now Iago's plan is working and Iago has control on Othello. Othello is full of rage and gets angry. Iago is the perfect villain with the small things he does like this even where he thinks about every small thing he does to ensure that his plans work. Othello now wants his wife dead. Readers now know that Iago has Othello completely fooled and Othello is now Iago's puppet (Iago is the puppet master, and he controls Othello). 

That never set a squadron in the field, Nor the division of a battle knows More than a spinster—unless the bookish theoric" (1.1.20-25).
Analysis:
Iago was speaking to Barbantio and is very jealous of Cassio, because he got the position that Iago believed was his. Iago is also jealous of Othello and wants to have revenge on him.  Every move that Iago did in this play was based of the jealousy he had for  Othello, and because of the jealousy he had Desdemona and Othello die. 

But I’ll set down the pegs that make this music, As honest as I am.”(2.1.185-190)
Analysis:
Iago was speaking to himself while watching Othello and Desdemona show affection, when they arrive Cyprus. Iago is clearly jealous of Othello's and and Desdemona relationship, and the love they have for each other. This is clearly shown through his master plan to destroy their relationship. Everything that he did in this play was an act of jealousy. This quote foreshadows what happens to Othello and Desdemona's relationship when Iago's plan works. 

I had thought t' have yerked him here under the ribs."(1.1.5-10)
Context:
Iago manipulates Othello by pretending to be his friend and Iago tells Othello that he would of stabbed Barbantio, but he thought it was wrong to murder someone. He does this right after making Othello look bad to Barbantio.
Analysis:
Iago is like a puppet master, and controls/manipulates others for his own gain. In this case Iago needed Othello to see him as a friend, and a loyal person. It seems as if he has mercy towards others, and does things in the benefit of others and not him self but Iago is truly mischievous, untrustworthy, and jealous of Othello, not a friend. 

they get into your blood they start burning like hot lava. (3.3.335-340)
Context:
Iago is manipulating Othello into thinking that Desdemona is cheating on Othello and is having an affair with Cassio.
Analysis:
Iago is very wise and does things with lots of thought. He continued to talk about Desdemona cheating on Othello over and over knowing that Othello would eventually believe him. Iago uses he words very carefully to manipulate others. Othello did not believe Iago in the beginning but now that he does Iago has full control on Othello and what he does. 

I had thought t' have yerked him here under the ribs."(1.1.5-10)

Context:
Iago manipulates Othello in to thinking Iago is his friend, by saying he would of stabbed Rodrigo, but he thinks its wrong to murder someone.
Analysis:
Othello does not question Iago's behaviour is quite odd as Othello just got in trouble from Barbantio because of Iago but now he has a change of heart and dislikes Barbantio. Othello should of thought of this instead of being blindsided to Iago.