God is the Creator and Ruler of the universe. He has eternally existed in three persons: the Father, the Son, and Holy Spirit. These three are co-equal and are one God.
He is all powerful, all knowing, all loving, and all wise. He reigns with providential care over the universe and the flow of human history goes according to His purpose and plan.
He is the third person of the Trinity. He guides men into all truth, exalts Christ, convicts of sin, righteousness and judgment, cultivates Christian character, comforts believers, bestows spiritual gifts by which believers serve God and seals the believer unto the day of final redemption. His presence in the lives of believers is the assurance of God to bring us into the realm of the stature of Christ.
Jesus Christ is the Son of God. He is co-equal with the Father, Jesus has eternally existed and became man at His incarnation. he lived a sinless human life and offered himself as the perfect sacrifice for the sins of all people by dying on a cross. He bodily arose from the dead after 3 days to demonstrate His power over sin and death. He ascended to Heaven's glory and will return again someday to earth to reign as King of Kings and Lord of Lords.
People were created to exist forever. We will either exist eternally separated from God by sin or eternally with God through forgiveness and salvation. To be eternally separated from God is Hell. To be eternally in union with Him is eternal life. Heaven and Hell are real places of eternal existence.