Exodus 20:3

פנ י

faces

9016

None
Definition: verseEnd
Root: None
Exhaustive: None

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9020

י
None
Definition: my, personal posessive - noun suffix: 1st person common singular
Root: None
Exhaustive: Personal posessive pronoun - suffix for nouns, adjectives and passive participles: 1st person singular

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6440

פנים
pânîym
Definition: the face (as the part that turns); used in a great variety of applications (literally and figuratively); also (with prepositional prefix) as a preposition (before, etc.)
Root: plural (but always as singular) of an unused noun פנה; from H6437 (פנה));
Exhaustive: plural (but always as singular) of an unused noun פנה; from פנה); the face (as the part that turns); used in a great variety of applications (literally and figuratively); also (with prepositional prefix) as a preposition (before, etc.); [phrase] accept, a-(be-) fore(-time), against, anger, [idiom] as (long as), at, [phrase] battle, [phrase] because (of), [phrase] beseech, countenance, edge, [phrase] employ, endure, [phrase] enquire, face, favour, fear of, for, forefront(-part), form(-er time, -ward), from, front, heaviness, [idiom] him(-self), [phrase] honourable, [phrase] impudent, [phrase] in, it, look(-eth) (-s), [idiom] me, [phrase] meet, [idiom] more than, mouth, of, off, (of) old (time), [idiom] on, open, [phrase] out of, over against, the partial, person, [phrase] please, presence, propect, was purposed, by reason of, [phrase] regard, right forth, [phrase] serve, [idiom] shewbread, sight, state, straight, [phrase] street, [idiom] thee, [idiom] them(-selves), through ([phrase] -out), till, time(-s) past, (un-) to(-ward), [phrase] upon, upside ([phrase] down), with(-in, [phrase] -stand), [idiom] ye, [idiom] you.

על

upon/against

9014

־
None
Definition: link
Root: None
Exhaustive: None

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5921a

על
ʻal
Definition: above, over, upon, or against (yet always in this last relation with a downward aspect) in a great variety of applications
Root: properly, the same as H5920 (על) used as a preposition (in the singular or plural often with prefix, or as conjunction with a particle following);
Exhaustive: properly, the same as על used as a preposition (in the singular or plural often with prefix, or as conjunction with a particle following); above, over, upon, or against (yet always in this last relation with a downward aspect) in a great variety of applications; above, according to(-ly), after, (as) against, among, and, [idiom] as, at, because of, beside (the rest of), between, beyond the time, [idiom] both and, by (reason of), [idiom] had the charge of, concerning for, in (that), (forth, out) of, (from) (off), (up-) on, over, than, through(-out), to, touching, [idiom] with.

אחרים

behind ones

312

אחר
ʼachêr
Definition: properly, hinder; generally, next, other, etc.
Root: from H309 (אחר);
Exhaustive: from אחר; properly, hinder; generally, next, other, etc.; (an-) other man, following, next, strange.

אלהים

mighty ones

430

אלהים
ʼĕlôhîym
Definition: gods in the ordinary sense; but specifically used (in the plural thus, especially with the article) of the supreme God; occasionally applied by way of deference to magistrates; and sometimes as a superlative
Root: plural of H433 (אלוה);
Exhaustive: plural of אלוה; gods in the ordinary sense; but specifically used (in the plural thus, especially with the article) of the supreme God; occasionally applied by way of deference to magistrates; and sometimes as a superlative; angels, [idiom] exceeding, God (gods) (-dess, -ly), [idiom] (very) great, judges, [idiom] mighty.

ל ך

to yourself/walk

9031

ך
None
Definition: you, personal pronoun - verb/prep. 2nd person masculine singular
Root: None
Exhaustive: Personal object pronoun - suffix for propositions and verbs without an object: 2nd person masculine singular

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9005

ל
None
Definition: to, for
Root: None
Exhaustive: None

יהיה

he is becoming

9014

־
None
Definition: link
Root: None
Exhaustive: None

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1961

היה
hâyâh
Definition: to exist, i.e. be or become, come to pass (always emphatic, and not a mere copula or auxiliary)
Root: a primitive root (compare H1933 (הוא));
Exhaustive: a primitive root (compare הוא); to exist, i.e. be or become, come to pass (always emphatic, and not a mere copula or auxiliary); beacon, [idiom] altogether, be(-come), accomplished, committed, like), break, cause, come (to pass), do, faint, fall, [phrase] follow, happen, [idiom] have, last, pertain, quit (one-) self, require, [idiom] use.

לא

not

3808

לא
lôʼ
Definition: not (the simple or abs. negation); by implication, no; often used with other particles
Root: or לוא; or לה; (Deuteronomy 3:11), a primitive particle;
Exhaustive: or לוא; or לה; (Deuteronomy 3:11), a primitive particle; not (the simple or abs. negation); by implication, no; often used with other particles; [idiom] before, [phrase] or else, ere, [phrase] except, ig(-norant), much, less, nay, neither, never, no((-ne), -r, (-thing)), ([idiom] as though...,(can-), for) not (out of), of nought, otherwise, out of, [phrase] surely, [phrase] as truly as, [phrase] of a truth, [phrase] verily, for want, [phrase] whether, without.

RBT Translation:

not he is becoming to yourself gods behind ones upon my face

RBT Paraphrase:
The Mighty Ones is not behind³ yourself upon the faces of myself.

LITV Translation:
You shall not have any other gods beside Me.

ESV Translation:
“You shall have no other gods before me.

Brenton Septuagint Translation:
Thou shalt have no other gods beside me.

Footnotes

Exo. 20:3

Hebrew אלהים אחרים elohim acharim. this phrase occurs about 63 times. Acharim in these instances is given a "collateral sense" of different. And from this it has been translated as "other." In other words, they change its meaning. The idea of "different" has nothing to do with the concept of the back, behind, afterward.