Do you fully know The FATHER, YAHWEH? No one does except the SON, The HOLY SPIRIT, and those in heaven who see HIM and worship HIM. Same as Moses, who did not know how to introduce HIM to the children of Israel. But Our FATHER, YAHWEH, asked Moses to refer back to HIS history, the experiences their Fathers/Ancestors had with HIM, how HE took care of them and lived them, and kept HIS promise to them. So look at HIS Words and promises and evaluate if they have been true both in history and in your life. If you believe in HIS works, and maybe you have experienced him, also believe in HIM. With time, if you accept and follow HIM, HE will reveal HIMSELF to you and all who love HIM.
Exodus 3:13-17 Then Moses said to God, “Indeed, when I come to the children of Israel and say to them, ‘The God of your fathers has sent me to you,’ and they say to me, ‘What is His name?’ what shall I say to them?” And God said to Moses, “I AM WHO I AM.” And He said, “Thus you shall say to the children of Israel, ‘I AM has sent me to you.’ ” Moreover God said to Moses, “Thus you shall say to the children of Israel: ‘The Lord God of your fathers, the God of Abraham, the God of Isaac, and the God of Jacob, has sent me to you. This is My name forever, and this is My memorial to all generations.’ Go and gather the elders of Israel together, and say to them, ‘The Lord God of your fathers, the God of Abraham, of Isaac, and of Jacob, appeared to me, saying, “I have surely visited you and seen what is done to you in Egypt;] and I have said I will bring you up out of the affliction of Egypt to the land of the Canaanites and the Hittites and the Amorites and the Perizzites and the Hivites and the Jebusites, to a land flowing with milk and honey.” ’
https://bible.com/bible/114/exo.3.13-17.NKJV
Matthew 11:27 All things have been delivered to Me by My Father, and no one knows the Son except the Father. Nor does anyone know the Father except the Son, and the one to whom the Son wills to reveal Him.
https://bible.com/bible/114/mat.11.27.NKJV
John 14:7-10 “If you had known Me, you would have known My Father also; and from now on you know Him and have seen Him.” Philip said to Him, “Lord, show us the Father, and it is sufficient for us.” Jesus said to him, “Have I been with you so long, and yet you have not known Me, Philip? He who has seen Me has seen the Father; so how can you say, ‘Show us the Father’? Do you not believe that I am in the Father, and the Father in Me? The words that I speak to you I do not speak on My own authority; but the Father who dwells in Me does the works.
https://bible.com/bible/114/jhn.14.7-10.NKJV
John 14:11-14 Believe Me that I am in the Father and the Father in Me, or else believe Me for the sake of the works themselves. “Most assuredly, I say to you, he who believes in Me, the works that I do he will do also; and greater works than these he will do, because I go to My Father. And whatever you ask in My name, that I will do, that the Father may be glorified in the Son. If you ask anything in My name, I will do it.
https://bible.com/bible/114/jhn.14.11-14.NKJV