In this saying the words “flesh and body” stands for the natural body the body of the soul and the word “spirit” stands for the spiritual body the body of the spirit 1Cor15:44-46:
44 It is sown a body of the soul, it is raised a body of the spirit; if there is a body of the soul, there is also of the spirit:––45 Thus, also, it is written––The first man, Adam, became, a living soul, the last Adam, a life–giving spirit. 46 Howbeit, not first, is the body of the spirit, but that, of the soul,––afterwards, that of the spirit. Rotherham’s Emphasized Bible
“If” in Hebrew and Greek can be translated in many ways in English 0518 Ma 'im eem a primitive particle; conditional part; in the AV-if, not, or, when, whether, surely, doubtless, while, neither, saving, verily; 43 Greek 1487 ei ei i a primary particle of conditionality; ; conj AV-if 242, whether 21, that 6, not tr 20, misc 3; 292 and “is” in the Greek may also be translated AV-is 744, are 51, was 29, be 25, have 11, not tr 15, misc 25, vr is 1; 900
Strong’s 2076 esti esti es-tee’ third person singular present indicative of 1510; ; v 1) third person singular of "to be" Used in phrase <3739> <2076> (5748) in: #Mr 3:17 7:11,34 12:42 15:15 Eph 6:17 Col 1:24 Heb 7:2 Re 21:8,17 These are listed under number 3603.
So the first part of this saying can be translated “when” “When the flesh come into being because of spirit, it was a miracle.”
Now in the next part of the text “but” in the Greek can be translated AV-but 1237, and 934, now 166, then 132, also 18, yet 16, yea 13, so 13, moreover 13, nevertheless 11, for 4, even 3, misc 10, not tr 300; 2870 1161 de de deh a primary particle (adversative or continuative); ; conj. so the next part of this saying can be translated also when spirit came into being because of the body it is a miracle of miracles.
So we have two miracles here the first one Jesus is speaking about the creation of man Gen 1: 2: when the flesh came into being by the spirit of El through the Elohim and this was a miracle and not by chance as the theory of scientific origins would have it. The second miracle is ”a miracle of miracles” for from the natural body comes the spiritual body or the spiritual world is developed from the natural one surely this is a miracle of miracles.
Here Jesus must be speaking to his disciples after his resurrection for On a certain occasion, Jesus unexpectedly stood in the midst of His disciples, at which they were exceedingly alarmed, supposing they beheld a spirit, or phantasm, as at a former time. But, that they might be assured that it was really He Himself, He invited them to handle Him, and examine His hands and feet: "for," said he, "a phantom hath not flesh and bones as ye see me have." He did not mean to say that a spiritual body had not; but a Spirit such as they thought they saw. "They supposed they had seen a phantom." When Jesus walked upon the sea both Matthew (Mat 14:26) and Mark (Mark 6:49) make use of the same phrase as Luke, and say that the disciples when they saw Him, "supposed they had seen a spirit, and they cried out for fear." In both these places the word is phantasma, and not pneuma.
Now, a Spiritual body is as material, or substantial and tangible, a body as that which we now possess. It is a body purified from "the law of sin and death." Hence it is termed "holy," and "spiritual," because it is born of the Spirit from the dust, is incorruptible, and sustained by the ruach, or spirit, independently of the neshemeh, or atmospheric air." "That which is born of the flesh," in the ordinary way, "is flesh," or an animal body: and that which is born of the Spirit," by a resurrection to life, "is spirit," or a Spiritual body (John 3:6). Hence, in speaking of Jesus, Paul says, "born of David's seed according to the flesh; and constituted the Son of God in power, by the spirit of holiness, through a resurrection from the dead" (Rom 1:3-4). Thus, He was born of the spirit, and therefore became "a Spirit;" and, because highly exalted, and possessing a name which is above every name (Phil 2:9-11), He is styled "the Lord the Spirit."
Now, Jesus Anointed is Power, or Spirit, manifested in flesh, and justified in Spirit (2 Tim. 3:16): or, "Made of the seed of David according to flesh; and constituted Son of God in power, according to spirit of holiness, out of a resurrection of dead ones" (Rom 1:3, 4): and therefore styled "the Lord the Spirit," or "a life-imparting Spirit" (1Cor 15:45; 2Cor 3:17, 18). Here are Spirit and Flesh. The Spirit is Theos, or Deity; the Flesh was the Son of Mary, and named Jesus; and when anointed with Spirit again at his resurrection, became Jesus Christ, or the Anointed Jesus. This anointing was his begettal of spirit by which he became Spirit; as he said to Nicodemus, "that which is born of the Spirit is spirit" (John 3:6).
The flesh is a vehicle for the spirit: a vehicle in Hebrew is a vehicle “cherub” “Cherubim”. in Phanerosis, Dr. Thomas gives us The etymology of the word “cherub” or with “im“ on the end of a Hebrew word denotes the plural number “Cherubim” “is said by Gesenius to be obscure; and he suggests what he calls “a new derivation.” He says “if the word be of Semitic origin, perhaps we may take the root charav as having a meaning like kharam “to prohibit from a common use.” Hence, to consecrate, etc. “So that ‘cherub’, would be keeper, warden, guard, that is, of the Deity, to guard against all approach.” Hyde, in his Religion of the Ancient Persians, page 263, supposes that “‘cherub’ may be the same as Kerub, the first letter being koph, instead of caph, and signifying one near to God. His minister — one admitted to His presence.” Both these derivations are in accordance with the truth concerning the Cherubim — nevertheless, not satisfactory to our mind. We believe that the word is derived from the root rachav, “to ride” whether on an animal or in a vehicle, By transposing the first two letters and heemantively inserting wav before the last, we have “cherub” or that which is ridden — in the plural. “cherubim.” This convertibility of the verb rachav into the noun “cherub” is illustrated in Psalms 18:10., thus: “And-he-rode upon-a-cherub and flew” but the Father by the Spirit also “inhabits the Cherubim.” David, in Psalm 80, and Hezekiah in Isaiah 37:16
According to this derivation, the cherubim comprise the chariots of Yahweh, in which he rides by his spirit, and through which he manifests himself. In 1Chr 28:18 the phrase “the chariot even the cherubim” occurs according to the RV supporting the contention of Phanerosis. It is further supported by the expressions of 2Kings 2:12 and 13:14
The “Cherubim,” then, constitute a vehicle, in and upon which the Eternal Power self-styled “Yahweh,” rides as in a chariot. The Spirit is the rider, and the Cherubim the “clouds,” the “horses,” the “chariots,” the “living creatures,” the “wheels,” the “great waters,” the “winged host,” upon which He rides. Hence, of the Eternal Spirit it is said: “Behold, He cometh with clouds” — the clouds of His witnesses, of whom the present evil aeon, or course of things, is not worthy (Rev. 1:7; Heb. 12:1; 1 Thess. 4:17); and again: “Was Thy wrath against the sea that Thou didst ride upon Thine horses, Thy chariots of salvation? Thou didst march through the sea with Thine horses, through the heap of great waters” (Hab. 3:8, 15); also, “Whither the Spirit was to go the living creatures went . . . . and they ran and returned as the appearance of a flash of lightning. And the noise of their wings was like the noise of great waters, as the voice of the Almighty, as the noise of a host” (Ezek. 1:12, 14, 24; Rev. 1:15; 19:14). In this last citation, wings, great waters, Almighty, and host, all refer to the same company — a multitudinous embodiment of the Effluence of the Eternal Father, who soars on these wings of the Spirit. Wy-yaide-al chanphai ruach (Ps. 18: 10).