Besides the fact that he repeats his name over 6500 times throughout the scriptures, he also tells us why it is important to know his name.
“And it will come about that whoever calls on the name of YHWH will be delivered” – Joel 2:32
“Therefore My people shall know My name; Therefore they shall know in that day That I am He who speaks: `Behold, it is I.’ ” – Isaiah 52:6
“They will call on My name, And I will answer them. I will say, `This [is] My people’; And each one will say, `YHWH is my Mighty One.’ ” – Zechariah 13:9
“If you will not hear, and if you will not set it on your heart to give glory to My name, says YHWH of armies, then I will send the curse on you, and I will curse your blessings. And indeed, I have cursed it, because you are not setting it on your heart.” – Malachi 2:2
These are just a few. Read the scriptures – his name is everywhere, and there are many blessings for those who seek after his name, and curses for those who despise it.