What is the connection between Hebrew and Arabic?

As a language, Hebrew refers to one of several dialects of the Canaanite language. Hebrew (Israel) and Moabite (Jordan) can be called Southern Canaanite dialects while Phoenician (Lebanon) can be called a Northern Canaanite dialect. Canaanite is closely related to Aramaic and to a lesser extent South-Central Arabic. Whereas other Canaanite dialects have become extinct, Hebrew survived. Hebrew flourished as a spoken language in Israel from the 10th century BCE until just before the Byzantine Period in the 3rd or 4th century CE. (See below, Aramaic displacing Hebrew as a spoken language.) Afterward Hebrew continued as a literary language until the Modern Era when it was revived as a spoken language in the 19th century.

There are three languages in the Semitic Language Group... Arabic, Hebrew and Maltese.

They are both semitic languages. I can't say that they are very similar to each other, if you know one of them it doesn't mean that you will understand the other. But there are a lot of common words, for example: : night laila, year shana, thousand alaf, i ana and many others. Both of them don't have vowels and capital letters. They both have a lot of common in grammar, sentence structures, and tenses. But the sounds and pronunciation are different. Hebrew doesn't have a lot of sounds that Arabic has.

Hebrew speaker Lena

Since English, German, Dutch are descendants of the Germanic languages...

French, Italian, and Spanish are from Latin...

Arabic and Hebrew along with Maltese are Semetic Languages.

And Semetic from Sam, the son of Noah.

Muslims trust that Judaism and Christianity are literally not something yet Islam yet with diverse regulations, what makes Islam diverse, is that the scriptures of Christianity and Judaism were tampered with and were given twisted, and the Islamic scripture remained preserved as promised in Quran, it truly is why Muslims trust that Islam is the in simple terms commonplace faith

They both belong to the Semitic languages.

both are semitic languages. some people trace them both back to akkadian or a proto assyrian while others say that one developed from the other.

i wasn't there, so i'm not sure.

The profanity...

And they are both Semitic languages.

they don't like each other