There are two great lights that show forth to man the things that may be known of God, which are the light of natural creation itself and the light of the inspired Word of God. Both teach us many things of His person and work, and both are inexhaustible in their depth. Apart from the Word of God we would not be able to know God in a personal way. Both of these lights work in perfect harmony and agreement, and we cannot know God or serve Him in truth without acknowledging that He is the sole author of both. There is far too much that relates to the character of God and His work in creation to expound with clarity here, but His Word does declare with great plainness the things we must believe of Him.
"The Lord our God is one Lord" - Deuteronomy 6:4
In the passage above from Deuteronomy, as in many others, the Hebrew word for God is "elohiym" which is a plural form of "elowahh" (God), and reads as "Jehovah our God (elohiym) is one Jehovah. This truth that we commonly refer to as the Trinity or Triune God, runs consistently through scripture from Genesis to Revelation and is critically important to understanding the teachings of scripture about God's identity.
The Scriptures clearly declare that there is only one GOD, and that He is eternally existent as God the Father, God the Son, and God the Holy Spirit, (Exodus 11; Psalms 18; John 10:30). The deity of the Lord Jesus Christ as God in the flesh is at the heart of the gospel. The scriptural record has preserved for all mankind the truth of His virgin birth, sinless life, miracles, death, burial, and resurrection. It assures us of His ascension to the right hand of the Father, and His premillennial, personal return in power & glory (John 1:1,14; 3:16; Philippians 2:6-10; I John. 2:1-2). God has promised the free gift of eternal life and forgiveness of sins to all who come by faith to accept Christ and His substitutionary death for our sins. Thanks be unto God for his unspeakable gift!