How do Christians justify their belief and how do they convince others of their belief?

First of all, I assume that everybody should have some sort of justification for his beliefs. Secondly, I assume that Christians are interested in convincing others to join them as evangelisation seems to be promoted in the bible. Lastly, I assume that Christians respect the laws of logic and therefore their justifications must also follow these laws. My question, based on these assumptions, is as follows: How do Christians justify their beliefs to themselves as well as to others and how do they convince others of their belief? *I am aware that this question is very fundamental. I tried to find an answer on the site, however, I couldn't find any. Please point me to any questions with good answers regarding this topic that I couldn't find!*