The sentences that contain an example of ethos are number 1, 3 and 5.
As a rhetorical device, ethos is grounded in the speaker's credibility, honesty or authority to involve the audience.
In sentence number 1, the fact that Gizmotry and Gadgetry has been active for 140 years implies that it has a good service and has been able to adapt and evolve with the market, so it can offer a better service.
In sentence number 3, all customer orders are right, or they're free the example of ethos is present in the display of confidence and authority and work ethic to the point that assure the customer that in the rare case that the order is not right, he or she will not have to pay for it.
In sentence number 5, the fact that the person prescribing the medication is wearing a stethoscope implies that he or she is a doctor with the knowledge and authority to prescribe Barco's medication.
Can you be more specific with your question I don’t think we understand
1. Ye hearers, take it of worth, old and young,
<span>And forsake Pride, for he deceiveth you in the end. - Doctor
2. </span>And save me from the fiend's boast,
That I may appear with that blessed host
<span>That shall be saved at the day of doom. - Everyman
3. </span>I perceive, here in my majesty,
How that all creatures be to me unkind,
<span>Living without dread in worldly prosperity - God
4. </span>He that loveth riches I will strike with my dart,
His sight to blind, and from heaven to depart,
<span>Except that Almsdeeds be his good friend, </span>
<span>In hell for to dwell, world without end. - Death</span>