Summary: We cannot seperate The Lord from his name, Therefore to know the Lord we must know him by his name.
To hallow the Name of the Lord is to sanctify or set apart, To honor and to revere, To recognize as High Holy and pure.
1 Peter 3:15 (quickview)  But sanctify the Lord God in your hearts: and be ready always to give an answer to every man that asketh you a reason of the hope that is in you with meekness and fear:
What is so important about The name of the Lord ?
The name is synomous with the person, that is to say: The scripture connects the name with the person in so much that where the name is, the person or character and attributes of the person of that name is present.
When I speak the name Billy Graham: Immediately there comes a sense of honor and appreciation, we think of a person who has stood the test of time, who has reached millions with the love of Jesus and who has lived a life above reproach.
So in a sense anywhere his name is, He is there, Maybe not physically, but the character that is connected to his name.
No wonder the bible says
Ecc 7:1 A good name is better than precious ointment;
Now this scripture makes sense
Ps. 75:1 for that thy name is near thy wondrous works declare.
Why Go into such depth about this? Because You cannot worship in spirit and In truth someone you don’t know, And we become aquainted with God through his names.
To truly worship him, you must have a revelation of him, and we receive that revelation through his name.
God progressively revealed himself throughout the old testament by making himself known by one of his names, Once he gave that name he became that to them, until he gave them that particular name they did not know him in that capacity.
5 And the LORD descended in the cloud, and stood with him there, and proclaimed the name of the LORD.
6 And the LORD passed by before him, and proclaimed, The LORD, The LORD God, merciful and gracious, longsuffering, and abundant in goodness and truth,
7 Keeping mercy for thousands, forgiving iniquity and transgression and sin, and that will by no means clear the guilty; visiting the iniquity of the fathers upon the children, and upon the children’s children, unto the third and to the fourth generation.
8 And Moses made haste, and bowed his head toward the earth, and worshipped.
What was it that Moses worshipped ? He worshipped the character=attributes of God that were represented by and contained in his name.
The Name Jehovah has the meaning of the self existent one or eternal one and has the inference of the God who reveals Himself to us. These compound Names reveal the nature of His many characteristics to us.
This name reveals our acceptance by God through the sacrificial Blood of Jesus as our substitute. 2 Corinthians 5:21 (quickview)  is an exciting scripture that describes the exchange that was made available to all as He made Him who knew no sin become sin for us so we could become the righteousness of God in Christ.