It is his memorial
Exo 3:14 And Elohim said to Mosheh, "I am that which I am."1 And He said, "Thus you shall say to the children of Yisra’?l, ‘I am has sent me to you.’ " Footnote: 1The Heb?rew text reads: ’eyeh ’asher ’eyeh, the word ’eyeh being derived from hayah which means to be, to exist, but the Aramaic text here in v. 14 reads: ayah ashar ayah. This is not His Name, but it is an explanation that leads up to the revelation of His Name in v. 15, namely: יהוה. YHVH
Exo 3:15 And Elohim said further to Mosheh, "Thus you are to say to the children of Yisra’?l, ‘יהוה Elohim of your fathers, the Elohim of Ab?raham, the Elohim of Yitsh?aq, and the Elohim of Ya?aqob?, has sent me to you. This is My Name forever, and this is My remembrance to all generations.’
Messiah's Prayer in John
Joh 17:12 "When I was with them in the world, I was guarding them in Your Name which You have given Me, and I watched over them, and not one of them perished except the son of destruction, that the Scripture might be filled
For those that say he never chose a name!
‘יהוה This is My Name forever, and this is My remembrance to all generations.’
But many have forgotten this name for LORD which is translated Baal