Is seeing believing?

To a larger extent, i do agree that seeing is believing because we as humans, its in our natures to not really believe someone without them showing a proof. We believe in what our eyes see and that's what we say its the truth-what our eyes see. In court cases, lawyers have to present evidence in favour of his client. 

Why does he have to present evidence? 

Because he knows that the judge can not believe anything he sees without giving justifications and evidence to his statements. It the same thing in real life situations.

However, nobody has seen God but still people believe in Him. So its not necessary for one to see something in order to believe in it. People believe in reincarnation. We don't know even know if it exists or not.

 Hence, it is not necessary to see something in order to believe in it.

Language

 Reflection on it: 
Language is what everyone uses to communicate, inform something, interact with others, use it to provide knowledge or information and to do so many other things. Language can not only be expressed verbally but also, via texts/messaging, through pictures/symbols and through videos. The type of language that one uses to express/give out a point may not be in the same way the other person would take/understand it. For example, if i say "I don't like school." I am meaning that i don't like the amount of work being given to me from school but the other person would think that i am meaning that i generally don't like the school am in. Therefore, the type of language and words used vary and is not necessary to be taken/understood in the same way by each and every person.  Symbols and pictures also have a hand in the way language is used and understood by people. For example; in shopping malls, there are trolleys that people can use with babies less than 1 year to shop with. The people don't have to carry their babies while shopping, The can keep the babies on the bed that is attached to the trolley and can move around the mall. But how do we know that tis is for people with babies only? This is where symbols or pictures play a role. With the baby bed attached to the trolley, it signifies that this types of trolleys are to be used with people with babies. Therefore, language plays different kind of roles in different situations. We use and see language everywhere.
Hence, language is a method for communicating and does not necessarily need to be verbally. And it also plays major roles in our lives.