On the surface, Genesis 1 describes the physical creation of the universe but hidden between the lines is the spiritual symbolism of the Gospel.

Kingdom of Light
God provides salvation through the Gospel.
2 Co 4:6

Gen 1:1   1. God is the creator of everything including mankind.

                 2.  God has revealed himself as three distinct persons in one God.

                       (God = Elohim plural) but verb (created = bara singular).

 Spiritual Symbolism of the Gospel:

In the beginning God created the heavens and the earth.
In the beginning of the creation of mankind, mankind sinned, necessitating a plan for redemption (beginning 1 Co 15:46). God planned (created Eph 3:9,10,11) to redeem mankind (earth 1 Co 15:47a) by Jesus (heavens 1 Co 15:47b).
Now the earth was formless and empty, darkness was over the surface of the deep, and the Spirit of God was hovering over the waters.
God’s redemption story begins after the Fall of mankind (Adam). Mankind/Adam (earth 1 Co 15:47) was without Christ (formless Gal 4:19) and without purpose (empty 1 Pe 1:18). Satan and his demons (darkness Eph 6:12) controlled the earth’s atmosphere while the Spirit of God sought mankind (hovering Lk 19:10), who in their rebellious state (waters Rev 17:15; Isa 17:12) were separated from the life of God (spiritual life Jn 4:10,13,14). Darkness also typifies a lack of spiritual discernment (2 Co 4:6). God paints us a dismal picture of man’s spiritual condition after the fall (Gen 3:6,7,8,10): he is separated from the life of God (Eph 4:18), living aimlessly (Eph 4:17) and without God’s wisdom (Jas 3:13,14,15,16).
To obtain spiritual life, after sin separated mankind from God, man must be born of water and the Spirit (Jn 3:5; Tit 3:5). Water (Jesus’ blood Eph 1:7; 1 Jn 1:7) cleanses/regenerates (Eze 36:25) one from all sins. Baptism is the symbolism (Ac 10:47) of an individual dying to a self-rule life, in favor of a Christ-rule life (Gal 2:20). If this decision is real, then the Holy Spirit comes to live inside (Eze 36:26) and guide this person (Jn 16:13; Eze 36:27), poured like water on these individuals (Zec 12:10; Ac 10:44,45) to drink forevermore (Jn 14:16,17; 1 Co 12:13; 1 Co 10:4). To drink from God is to put into practice His truth from the Word of God (Eph 5:26,27, 2 Ti 3:16).
Adam was formed from the ground (Gen 2:7) representing stability (Jnh 1:15,17,2:10; Ex 14:29,30) and dependency on Christ (Ex 14:26,27; Jn 15:5; Gal 2:20) but now sinful man lives in the sea, signifying instability (Jas 1:6,7,8; Ex 14:28; Rev 17:15,16); rebellion (Isa 17:12; Ps 65:7) and independence from God (Jnh 1:3). The Holy Spirit is like a concerned mother (Dt 32:11) hovering above to help any man out of the Sea of death (Rev 20:13) into the land of the living (Isa 53:8). The Holy Spirit is represented by oil (1 Sa 16:13) and sinful man by water (Isa 17:12). Oil and water do not mix and neither does sin and the holiness of God (Isa 59:2). However, if an emulsifier is applied, like soap, it will cause the oil and water to stick together, cleaning your hands. Likewise, Jesus’ blood is the emulsifier that brings sinful man and the Holy Spirit together (Ac 2:38) by washing away man’s sins (Eze 36:25,26).
And God said, “Let there be light,” and there was light. God saw that the light was good, and he separated the light from the darkness. God called the light “day,” and the darkness he called “night.” And there was evening, and there was morning—the first day.
So, God begins His plan of salvation for lost mankind by providing truth, the Kingdom of Light (Eph 5:8,9), for anyone choosing to receive the light of Christ (Jn 1:4,5; 1 Jn 1:7). These will be the children of the light and the day (1 Th 5:5) rescued from the Kingdom of Darkness (Col 1:13), delivered from darkness to light, evening to morning.