There are different aspects to the promise to Abraham, all of which can be used to display different aspects of the Gospel and shadow pictures of Messiah.
His seed was to be as the sand/dust (Genesis 13:16; 22:17) – This aspect of the promise to Abraham will be used to share Shadow Pictures of Messiah in the earth.
The study of the earthly points us to the heavenly.
Joh 3:12 If I tell you earthly things, and you do not believe, how will you believe if I tell you heavenly things?
1Co 15:45 So also it has been written, “The” first “man”, Adam, “became a living soul;” the last Adam a life-giving Spirit. Gen. 2:7
1Co 15:46 But not the spiritual first, but the natural; afterward the spiritual.
1Co 15:47 The first man was out of earth, earthy. The second Man was the Lord out of Heaven. Gen. 2:7
1Co 15:48 Such as is the earthy man, such also are the earthy ones. And such as is the heavenly Man, such also are the heavenly ones.
1Co 15:49 And as we bore the image of the earthy man, we shall also bear the image of the heavenly Man.
The natural (earthly things) point to the Heavenly (spiritual things).
Everywhere we look on earth, the image of Messiah is seen. He is described as the Living Waters (Jeremiah 2:13; 17:13; Isaiah 44:3; John 4:10; 7:37 etc), the Rock (Psalm 18:2, 31; 62:7; 92:15; Deuteronomy 32:3-4; Isaiah 44:8; 1 Corinthians 10:4, 9; Genesis 49:24), He is described as the Rain (Hosea 6:3; Deuteronomy 32:3; Psalm 72:6; Isaiah 45:8), Snow (Isaiah 55:10), His voice is likened to thunder, lightning and many waters (Revelation 1:15; Ezekiel 43:2). He is the Tree of Life (John 14:6; Proverbs 3:18) and the Spirit (wind) (1 Peter 1:11; Romans 8:9). He is described as flowers (Song of Songs 2:1) and the clouds point to Him (Isaiah 19:1; Psalm 104:3; Matthew 26:64; Daniel 7:13; Revelation 1:7; 14:14; Exodus 16:10; 40:34 etc). The grass, sand and seashore reveal Him. All of nature declares His Glory!!!.
The Earth reveals His Glory
Joh 12:37 But though He had done so many miraculous signs before them, they did not believe into Him,
Joh 12:38 so that the Word of Isaiah the prophet might be fulfilled, which he said, “Lord, who has believed our report? And the arm of the Lord, to whom was it revealed?” Isa. 53:1
Joh 12:39 Because of this they could not believe, because Isaiah said again,
Joh 12:40 “He has blinded their eyes” and “has hardened their heart,” “that they might not see with the eyes” and “understand with the heart,” “and be converted,” “and I should heal them.” Isa. 6:10
Joh 12:41 Isaiah said these things when he saw His glory, and spoke about Him.
Albert Barnes commentary Joh 12:41 –
When he saw his glory – Isa_6:1-10. Isaiah saw the Lord (in Hebrew, יהוה Yahweh) sitting on a throne and surrounded with the seraphim. This is perhaps the only instance in the Bible in which Yahweh is said to have been seen by man, and for this the Jews affirm that Isaiah was put to death. God had said Exo_33:20, “No man shall see me and live;” and as Isaiah affirmed that he had seen Yahweh, the Jews, for that and other reasons, put him to death by sawing him asunder. See Introduction to Isaiah, Section 2.
By his glory is meant the manifestation of him – the Shechinah, or visible cloud that was a representation of God, and that rested over the mercy-seat. This was regarded as equivalent to seeing God, and John here expressly applies this to the Lord Jesus Christ
John affirms that it was the glory of the Messiah that Isaiah saw, and yet Isaiah affirms that it was Yahweh; and from this the inference is irresistible that John regarded Jesus as the Yahweh whom Isaiah saw.
Isa 6:1 In the year that King Uzziah died, then I saw the Lord sitting on a throne, high and lifted up. And His train filled the temple.
Isa 6:2 Above it stood the seraphs. Each one had six wings; with two he covered his face; and with two he covered his feet; and with two he flew.
Isa 6:3 And one cried to the other and said, Holy, holy, holy is Jehovah of Hosts; all the earth is full of His glory!
KJV footnote ‘His glory is the fulnesse of the whole earth.’
Isa 6:4 And the doorposts shook from the voice of the one who cried; and the house was filled with smoke.
Isa 6:5 Then I said, Woe is me! For I am cut off; for I am a man of unclean lips, and I live amongst a people of unclean lips; for my eyes have seen the King, Jehovah of Hosts.
Hab 2:14 For the earth shall be filled with the knowledge of the glory of Jehovah, as the waters cover the sea.
This is the definition of eternal life to know His Glory (John 17:3)
Jesus is the glory of the LORD
Rev 1:15 And his feet like unto fine brass, as if they burned in a furnace; and his voice as the sound of many waters.
Rev 21:23 And the city had no need of the sun, neither of the moon, to shine in it: for the glory of God did lighten it, and the Lamb is the light thereof.
Messiah is the Lamb of God (John 1:29, 36; Revelation 5:6; 7:17; 14:10; 15:3; 19:9; 21:23; 22:1,3)
The Lamb and the 7 Spirits of God
Rev 5:6 And I saw, and behold, in the midst of the throne, and of the four living creatures, and in the midst of the elders, was a Lamb standing, as having been slain, having seven horns and seven eyes, which are the seven Spirits of God,having been sent out into all the earth.
Isa 11:1 And a Shoot goes out from the stump of Jesse, and a Branch will bear fruit out of his roots.
Isa 11:2 And the Spirit of Jehovah shall rest on Him; He will have the spirit of wisdom and understanding, the spirit of counsel and power, the spirit of knowledge and of the fear of Jehovah.
Isa 11:3 And He is made to breathe in the fear of Jehovah. But He shall not judge by the sight of His eyes, nor decide by the hearing of His ears.
The ‘Shoot’ of Jesse mentioned above is seen in the Olive tree
Rom 11:16 Now if the firstfruit is holy, so also the lump. And if the root is holy, so also the branches.
The Olive Tree of Israel is linked to the menorah (Zechariah 4:14) and the body of Messiah.
7 Branches of the Menorah correspond to the 7 continents
The center of the Menorah is the Messiah (ירך ‘yarekh’ – body). The center of the earth is the land of Israel (Ezekiel 8:12), whose center is Jerusalem which is further divided into 7 mountains (1 Enoch 17:6-8; 24:1). The center of Jerusalem is the Temple which contains the 7 branched menorah, the Holy of Holies is the center of the Temple and the Ark is placed in the center of the Holy of Holies which contains the 7 pillars of Wisdom (Proverbs 9:1).