I personally think there is error in the way EL (Yl) is translated into "God"
But the meaning of the verses is that there is no other true power besides Him. There was none before like Him and there will be none after. Yahweh (called God) is the Creator if all that is and He holds authority over everything.
The Encyclopedia Judaica, Volume 7, page 674
'El. The oldest Semitic term for God is `el (corresponding to Akkadian ilu (m), Canaanite 'el or 'il, and Arabic 'el as an element in personal names). The etymology of the word is obscure. It is commonly thought that the term derived from a root `yl or `wl meaning "to be powerful."
Strong's Exhaustive Concordance Hebrew Dictionary
410. 'el, ale; short. from 352; strength; as adj. mighty; espec. the Almighty (but used also of any deity):—God, (god), x goodly, x great, idol, might (-y one), power, strong. Cop. names in "-el."
352. ayil, ah'yil; from the same as 193; prop. strength; hence anything strong; spec. a chief (politically); also a ram (from his strength); a pilaster (as a strong support); an oak or other strong tree:—mighty (man), lintel, oak, post, ram, tree.
193. uwl, ool; from an unused root mean. to twist. i.e. (by impl.) be strong; the body (as being rolled together); also powerful:—mighty, strength.
In ancient Hebrew there were no written vowels, thus a word can not start with a vowel, a vowel can be used in pronounciation, but a ancient Hebrew word can not start with a letter that is not in the written language.
IMO Yl (El) does not properly translate as "God" it means strength.
Isayah 43:10, "You are My witnesses, says Yahweh, and My servants whom I have chosen; so you may know and believe Me, and understand that I am He! Before Me there was no power formed, nor will there be after Me."
Isaiah 43:10
►Text Analysis
[TABLE="class: maintext"]
[TR]
[TD="class: top"]Str[/TD]
[TD="class: top, width: 20%"]Translit[/TD]
[TD="class: top, width: 20%"]Hebrew[/TD]
[TD="class: top, width: 25%"]English[/TD]
[TD="class: top, width: 18%"]Morph[/TD]
[/TR]
[TR]
[TD="class: strongsnt"]
859 [e][/TD]
[TD="class: translit"]
’at-tem[/TD]
[TD="class: hebrew2"]אַתֶּ֤ם[/TD]
[TD="class: eng"]you[/TD]
[TD="class: pos"]
Pro[/TD]
[/TR]
[TR]
[TD="class: strongsnt"]
5707 [e][/TD]
[TD="class: translit"]
‘ê-ḏay[/TD]
[TD="class: hebrew2"]עֵדַי֙[/TD]
[TD="class: eng"][are] my witnesses[/TD]
[TD="class: pos"]
Noun[/TD]
[/TR]
[TR]
[TD="class: strongsnt"]
5002 [e][/TD]
[TD="class: translit"]
nə-’um-[/TD]
[TD="class: hebrew2"]נְאֻם־[/TD]
[TD="class: eng"]said[/TD]
[TD="class: pos"]
Noun[/TD]
[/TR]
[TR]
[TD="class: strongsnt"]
3068 [e][/TD]
[TD="class: translit"]
Yah-weh,[/TD]
[TD="class: hebrew2"]יְהוָ֔ה[/TD]
[TD="class: eng"]the LORD[/TD]
[TD="class: pos"]
Noun[/TD]
[/TR]
[TR]
[TD="class: strongsnt"]
5650 [e][/TD]
[TD="class: translit"]
wə-‘aḇ-dî[/TD]
[TD="class: hebrew2"]וְעַבְדִּ֖י[/TD]
[TD="class: eng"]and my servant[/TD]
[TD="class: pos"]
Noun[/TD]
[/TR]
[TR]
[TD="class: strongsnt"]
834 [e][/TD]
[TD="class: translit"]
’ă-šer[/TD]
[TD="class: hebrew2"]אֲשֶׁ֣ר[/TD]
[TD="class: eng"]whom[/TD]
[TD="class: pos"]
Prt[/TD]
[/TR]
[TR]
[TD="class: strongsnt"]
977 [e][/TD]
[TD="class: translit"]
bā-ḥā-rə-tî;[/TD]
[TD="class: hebrew2"]בָּחָ֑רְתִּי[/TD]
[TD="class: eng"]I have chosen[/TD]
[TD="class: pos"]
Verb[/TD]
[/TR]
[TR]
[TD="class: strongsnt"]
4616 [e][/TD]
[TD="class: translit"]
lə-ma-‘an[/TD]
[TD="class: hebrew2"]לְמַ֣עַן[/TD]
[TD="class: eng"]to the end that[/TD]
[TD="class: pos"]
Subst[/TD]
[/TR]
[TR]
[TD="class: strongsnt"]
3045 [e][/TD]
[TD="class: translit"]
tê-ḏə-‘ū[/TD]
[TD="class: hebrew2"]תֵּ֠דְעוּ[/TD]
[TD="class: eng"]you may know[/TD]
[TD="class: pos"]
Verb[/TD]
[/TR]
[TR]
[TD="class: strongsnt"]
539 [e][/TD]
[TD="class: translit"]
wə-ṯa-’ă-mî-nū[/TD]
[TD="class: hebrew2"]וְתַאֲמִ֨ינוּ[/TD]
[TD="class: eng"]and believe[/TD]
[TD="class: pos"]
Verb[/TD]
[/TR]
[TR]
[TD="class: strongsnt"][/TD]
[TD="class: translit"]
lî[/TD]
[TD="class: hebrew2"]לִ֤י[/TD]
[TD="class: eng"]to me[/TD]
[TD="class: pos"]
Prep[/TD]
[/TR]
[TR]
[TD="class: strongsnt"]
995 [e][/TD]
[TD="class: translit"]
wə-ṯā-ḇî-nū[/TD]
[TD="class: hebrew2"]וְתָבִ֙ינוּ֙[/TD]
[TD="class: eng"]that understand[/TD]
[TD="class: pos"]
Verb[/TD]
[/TR]
[TR]
[TD="class: strongsnt"]
3588 [e][/TD]
[TD="class: translit"]
kî-[/TD]
[TD="class: hebrew2"]כִּֽי־[/TD]
[TD="class: eng"] -[/TD]
[TD="class: pos"]
Conj[/TD]
[/TR]
[TR]
[TD="class: strongsnt"]
589 [e][/TD]
[TD="class: translit"]
’ă-nî[/TD]
[TD="class: hebrew2"]אֲנִ֣י[/TD]
[TD="class: eng"]I [am][/TD]
[TD="class: pos"]
Pro[/TD]
[/TR]
[TR]
[TD="class: strongsnt"]
1931 [e][/TD]
[TD="class: translit"]
hū,[/TD]
[TD="class: hebrew2"]ה֔וּא[/TD]
[TD="class: eng"]he[/TD]
[TD="class: pos"]
Pro[/TD]
[/TR]
[TR]
[TD="class: strongsnt"]
6440 [e][/TD]
[TD="class: translit"]
lə-p̄ā-nay[/TD]
[TD="class: hebrew2"]לְפָנַי֙[/TD]
[TD="class: eng"][am] before[/TD]
[TD="class: pos"]
Noun[/TD]
[/TR]
[TR]
[TD="class: strongsnt"]
3808 [e][/TD]
[TD="class: translit"]
lō-[/TD]
[TD="class: hebrew2"]לֹא־[/TD]
[TD="class: eng"]not[/TD]
[TD="class: pos"]
Adv[/TD]
[/TR]
[TR]
[TD="class: strongsnt"]
3335 [e][/TD]
[TD="class: translit"]
nō-w-ṣar[/TD]
[TD="class: hebrew2"]נ֣וֹצַר[/TD]
[TD="class: eng"]do formed[/TD]
[TD="class: pos"]
Verb[/TD]
[/TR]
[TR]
[TD="class: strongsnt"]
410 [e][/TD]
[TD="class: translit"]
’êl,[/TD]
[TD="class: hebrew2"]אֵ֔ל[/TD]
[TD="class: eng"]God[/TD]
[TD="class: pos"]
Noun[/TD]
[/TR]
[TR]
[TD="class: strongsnt"]
310 [e][/TD]
[TD="class: translit"]
wə-’a-ḥă-ray[/TD]
[TD="class: hebrew2"]וְאַחֲרַ֖י[/TD]
[TD="class: eng"]and after[/TD]
[TD="class: pos"]
Adv[/TD]
[/TR]
[TR]
[TD="class: strongsnt"]
3808 [e][/TD]
[TD="class: translit"]
lō[/TD]
[TD="class: hebrew2"]לֹ֥א[/TD]
[TD="class: eng"]neither[/TD]
[TD="class: pos"]
Adv[/TD]
[/TR]
[TR]
[TD="class: strongsnt"]
1961 [e][/TD]
[TD="class: translit"]
yih-yeh.[/TD]
[TD="class: hebrew2"]יִהְיֶֽה׃[/TD]
[TD="class: eng"]shall there be[/TD]
[TD="class: pos"]
Verb[/TD]
[/TR]
[TR]
[TD="class: strongsnt"][/TD]
[TD="class: translit"]
s[/TD]
[TD="class: hebrew2"]ס[/TD]
[TD="class: eng"] -[/TD]
[TD="class: pos"][/TD]
[/TR]
[/TABLE]