The second letter in the Hebrew Aleph-Bet is "Bet." Bet is equivalent to the number 2. Bet is closely related to the Hebrew word for "House" Beit בַּיִת.
Genesis 28:16-19
And Jacob arose early in the morning, and he took the stone that he had placed at his head, and he set it up as a monument, and he poured oil on top of it. And he named the place Beth El, (House of G-d) but Luz was originally the name of the city..
In Judaism, the phrase "the Place" (Hebrew-HaMakom) is one of the names for God. The verse above, Genesis 28.19, is the reason that Place was marked by a Rock. That Rock became a House. Jacob named the place Beth-El, House Of God. The letter that symbolizes the word for House (Beit) is the letter ב BET. One side of the letter Bet is open because God's house, like Abraham's tent is always open.
In it's ancient form the letter "Bet" was shaped like a tent. The Israelites traveled in tents during the Exodus.
Numbers 24.5
How goodly are your tents, O Jacob, your dwelling places, O Israel!
Here is a short video on the history of the shape of letter. (Interestingly, the Hebrew word for tent Ohel אוֹהֶל does not contain the letter Bet.)
Bet is so important that God used the letter Bet (בַּ) to start the first word in the Bible - Bereshit בְּרֵאשִׁית which means "In beginning." Jewish sages say the Torah, and Creation, start with a bet because the world itself begins with—I and is contained within—the letter Bet.
The word Ben (Bet Nun) pictured above in their ancient form also means Son. The letter NUN in Son has the numeric equivalent to 50 (Pentecost). 50 is Jubilee. The shape of the ancient NUN is a fish/seed.
The first two letters in the Hebrew word Bereshit (בְּרֵאשִׁית) are Bet and Resh (בְּרֵ). They make the Aramaic word "Bar" which means "Son."
Imagine how sad and difficult life would be without a house or home. A house (Beit) provides shelter, a critical means for survival. But there is more to life than survival. Man is not meant to be alone, and thus God created woman. Together, a father (Av-אָב in Hebrew and Abba-אבא in Aramaic) and a mother (Emma-אִמָא) make a house (Beit) into a home where they build a family by adding a son (Ben-בֵּן) and/or a daughter (Bet-בַּת). In the Torah, the legacy of the family is handed down through the Son. ("Son of").
The first three letters in Bereshit בְּרֵאשִׁית, spell בְּרֵא (Bra). Pronounced Barah. בְּרֵא (Bra) means “ "create.”
So we have HOUSE Bet (בַּ), SON Bar (בְּרֵ) and CREATE בְּרֵא (Bra) in the first 3 letters IN THE BEGINNING (Bereshit בְּרֵאשִׁית) of the first WORD of CREATION in the Bible. How cool is that!!
Getting back to just the letter Bet, one way we can find the meaning of BET is through Psalm 119. Psalm 119 is organized around each of the 22 letters in the Hebrew aleph-bet. For each letter there are 8 verses that provide us insight and understanding of the respective letter. The 8 verses associated with Bet are found in verses 9 - 16. The Hebrew word that starts each verse is printed in bold when translated into English.
Psalm 119: 9-16
9. HOW can a young man cleanse his way? By taking heed according to Your word.
10. WITH my whole heart I have sought You. Oh, let me not wander from Your commandments.
11. YOUR word I have hidden IN MY HEART that I may not sin against You.
12. BLESSED are You, O Lord, teach me Your statutes.
13. WITH MY LIPS I have declared all the judgments of Your mouth.
14. I have rejoiced IN THE WAY of Your testimonies, as much as in all riches.
15. I will meditate ON YOUR PRECEPTS, and contemplate Your ways.
16. I will delight myself in YOUR STATUTES ; I will not forget Thy word.
Walking in the ways of the Lord brings us closer to God.
The Creator rested on the 7th day of creation. Mankind, created in His image, are to "observe the rest." To my mind, Bet Aleph, BA, is like a call from the Creator to Come and See. God created such a beautiful and diverse world for us to see and enjoy.
Tragically for Mankind that wasn't enough. We wanted more. So we ate from the Tree of Knowledge of Good & Evil. So God put us outside the Garden. Because He is a God of Grace & Mercy He is always calling us back. BA, COME! His House is always open.
Epilogue:
The House of God written in the earth.