1John 5:1

Πᾶς ὁ πιστεύων ὅτι Ἰησοῦς ἐστιν ὁ Χριστός, ἐκ τοῦ Θεοῦ γεγέννηται· καὶ πᾶς ὁ ἀγαπῶν τὸν γεννήσαντα ἀγαπᾷ καὶ τὸν γεγεννημένον ἐξ αὐτοῦ.

RBT Greek Interlinear:

Strongs 3956; Pas; Πᾶς; all; Adj-NMS

Strongs 3588; ho; ὁ; the; Art-NMS

Strongs 4100; pisteuōn; πιστεύων; he who trusts; V-PPA-NMS

Strongs 3754; hoti; ὅτι; that; Conj

Strongs 2424; Iēsous; Ἰησοῦς; Salvation; N-NMS

Strongs 1510; estin; ἐστιν; is; V-PIA-3S

Strongs 3588; ho; ὁ; the; Art-NMS

Strongs 5547; Christos; Χριστὸς; Christ; N-NMS

Strongs 1537; ek; ἐκ; from out; Prep

Strongs 3588; tou; τοῦ; the; Art-GMS

Strongs 2316; Theou; Θεοῦ; God; N-GMS

Strongs 1080; gegennētai; γεγέννηται; has been born; V-RIM/P-3S

Strongs 2532; kai; καὶ; and; Conj

Strongs 3956; pas; πᾶς; all; Adj-NMS

Strongs 3588; ho; ὁ; the; Art-NMS

Strongs 25; agapōn; ἀγαπῶν; he who agape-loves; V-PPA-NMS

Strongs 3588; ton; τὸν; the; Art-AMS

Strongs 1080; gennēsanta; γεννήσαντα; he who has begotten; V-APA-AMS

Strongs 25; agapa; ἀγαπᾷ; is agape-loving; V-PIA-3S

Strongs 2532; kai; ‹καὶ›; and; Conj

Strongs 3588; ton; τὸν; the; Art-AMS

Strongs 1080; gegennēmenon; γεγεννημένον; that which has been born; V-RPM/P-AMS

Strongs 1537; ex; ἐξ; from out; Prep

Strongs 846; autou; αὐτοῦ; himself; PPro-GM3S

RBT Translation:

Every one who is trusting that he is Salvation, the Anointed One,⁶ has been begotten from out of the God, and every one who is agape-loving the one who has begotten, is agape-loving the one who has been begotten from out of himself!

Mutuality
"And mighty ones is saying, 'I have given to yourselves here all the self eternal grass of a seed seed, who is upon the faces of the entire Earth, and the entire Tree whom within himself is the fruit of a tree of a seed seed to yourselves, he is food.'"

(Genesis 1:29 RBT)

LITV Translation:
None

ESV Translation:
Everyone who believes that Jesus is the Christ has been born of God, and everyone who loves the Father loves whoever has been born of him.

Footnotes

6

Is that Legal?

Greek Πᾶς ὁ πιστεύων ὅτι ἐστιν Ἰησοῦς ἐστιν ὁ Χριστός

It is legal, and it is a relatively standard order in Koine Greek. But specifically with the verb "to be" ?

ὁ ἄνθρωπος Γαλιλαῖός ἐστιν. Luke 23:6

"the man a Galilean he is."

The sentence in Luke 23:6 is translated as "The man is a Galilean." Greek word order is flexible with the verb often appearing after the subject and adjective. Subject + Predicate Adjective + Verb.

Ἔρημός ἐστιν ὁ τόπος Mark 6:35

"Desolate is the Place"

This is written "backwards" from how it would be translated into English, "The Place is Desolate" 

In the case of subject nouns, a sentence like ὁ ἄνθρωπος ὁ βασιλεὺς ἐστιν ("The man the king he is"), ὁ βασιλεὺς ("the king") is the second noun (which is also in the nominative case and refers to the same subject as ὁ ἄνθρωπος), and the verb ἐστιν follows after the second noun. The translation, "the man is the king." 

Βασιλεὺς Ἰσραήλ ἐστιν. Matthew 27:42

A king of Israel he is. 

ὥστε κύριός ἐστιν ὁ Υἱὸς τοῦ ἀνθρώπου... Mark 2:28

"so a lord he is, the Son of the Man..."

All the translations translate the order of these words in reverse, "So the Son of Man is Lord..."