How can a speaker establish credibility with the audience and why is it important in the speech?

The first part of the question is a bit hard to explain (you can fill in a course with it), but among dozens of other things, the speaker must be well informed on the subject he/she is giving a speech about, speak clearly and coherently, and be confident with a proper posture. It is of major importance to speech because without it public will not be inclined to listen to the speaker and so much of the effort of the speaker is lost simply cause public is not listening or paying attention. When you give a speech you need to have the full attention of your audience, or else it is pretty much a waste of time.|||Start out with a witticism or a little joke relating to the subject. It makes people smile or laugh and the whole audience relaxes. Don't forget they are nervous for YOU . So relax them. Then change the tonality of your voice so if the talk is long they don't get lulled into sleep. It happens with the best speeches. Keep to the main points and don't digress too much. And when you want to make a big point that people should really get, then walk away and to the side or even in front of the podium so they can see you are doing something different and they should take note. Smile and move around a bit so they can look at you too. They want to take you in with their eyes so make sure you have everything well put together. Speak slowly, enunciate well and look at them all , all around the room.|||To make the speaker establish credibility he first has to somewhat relate with the audience then you throw in some kind of hook that makes the audience listen. It is important because if you do not get the audience's attention then they aren't listening so that whole speech was a waste of time.