You answer: The same One worshipped by Holy Men of old.  Your reply is good; but do you?  Check yourself by the following texts, as found in the Hebrew Scriptures which Holy men wrote under inspiration of the Holy Spirit. - II Tim.. 3:16; II Pet. 1:21.
Paul said that there were "many gods" and "many lords" in the world; so, if you worship "a god" what is His name?  If you worship "a lord" what is his name?  If you worship "the Creator," what is his name?  If you worship "the heavenly Father" what is his name?  Read I Cor. 8:5; Prov. 30:4.

     Apostate Israel forsook YAHWEH and served Baal (Judges 2:13),

 Meni and God (Isa. 65:11), and many other gods, and goddesses II Kgs. 23:4 to, 14.
The one worshipped by Jeroboam was named "Baal." - I Kgs 12:28.
The one worshipped by Ahab was named "Baal." - I Kgs. 16:31.
The one worshipped by Jezebel was named "Baal."- I Kgs. 18:4-19.
The one worshipped by Ahaziah was named "Baal."- I Kgs. 22:53.
The one worshipped by Jezebel's prophets was named "Baal."- I Kgs. 18:26.
The one worshipped by Solomon was named "Ashtoreth."- I Kgs. 11:5.
The one worshipped by evil Jerusalem women was named "Tammuz."-Ezk. 8:4.
The one worshipped by the ancient Greeks was named "Zeus." - See history.

     The one worshipped by modern Greeks is called "Kurios." See their Bibles.
The one worshipped by the Polish people is "Pan." See their Bibles and Webster's Unabridged Dictionary.
The one worshipped by the ancient Phoenicians was named "Adonai." See Bible dictionary.
The one worshipped by modern Jews is named "Adonai." See Jewish encyclopedia and their religious literature.
The one worshipped by the Roman Catholic Church is named "Lord God." See their Douay Version Bible.
The one worshipped by King James was named "Lord."- See the King James Version Bible.
The one worshipped by the United States of America is named "God."-See the Silver Dollar, etc.

     Note:  When LORD appears in your Bible, written in small capital letters, it is where the inspired Holy Men wrote YHWH, and should be read and pronounced Yahweh, not Lord.  Lord means Baal. See a Bible dictionary.
Is YAHWEH the One you worship?  If not, why not?
The One worshipped by Noah was named YAHWEH.- Gen. 8:20.
The One worshipped by Abraham was named YAHWEH.- Gen. 21:33.
The One worshipped by Isaac was named YAHWEH.- Gen. 26:25.
The One worshipped by Jacob was named YAHWEH.- Gen. 32:9.
The One worshipped by Moses was named YAHWEH.- Exo. 3:15; 5:1.
The One worshipped by David was named YAHWEH.- Psa. 83:16-18, and in all the Psalms.
     

The One manifested by the Messiah was named YAHWEH.- John 5:43; 17:26; Psa. 68:4, 22:22; Heb. 2:12.
The Eternal One, to Whom all worship is rightfully due, named Himself.  He did not leave this job for man.  He said, "I AM YAHWEH, THAT IS MY NAME."- Isa. 42:8; Jer. 33:2; Gen. 15:7; 28:13; Exo. 3:15; 20:1, according to the inspired Scriptures.
The prophet declared, "All people will walk every one in the name of his god (his national deity); and we (the Bride class) will walk in the name of YHWH (Yahweh) our Mighty one, for ever and ever." - Micah 4:5.
The priests and worshippers of pagan gods claim for them the glory and honour of being "Lord," "God," "Creator," "Father," etc., so, in order to sanctify the One you worship from the gods of the world, should you not worship in His inspired Name?  Should we not understand that the Almighty is teaching us, when He says, "I am Yahweh: that is my name; and my glory will I not give to another, nor my praise to graven images?" - Isa. 42:8; Psa. 96:5.
     

      Whom do you worship?  We worship YAHWEH (Micah 4:5, original text).
If you worship the same One as did Abraham, Isaac and Jacob, why not say so, by Name?
It is time to begin searching the Scriptures to learn the old paths, and find the One in whom the Holy Men of the Scriptures trusted.  Over 7,000 times the inspired Scriptures reveal His Name as YHWH (Yahweh), yet the world knows him not by name; but the promise is, "My people shall know my name." - Isa. 52:6.
If you claim to worship One you call "the Lord," "the God," the Father," or "the Creator," why not tell others, by Name?