Christ- The Father sent His Son, Jesus Christ into the world through the virgin birth. He fulfilled OT prophecy of the coming Messiah, bringing reconciliation between man and God. Living a perfect life, being fully God and fully man, He freely laid down his life for us, the many. He paid the punishment for our sin, rose again, and offers eternal life with Him through the resurrection. 1 Peter 3:18, 2 Cor. 5:21, 15:3, Romans 5:8, 5:10,
Response - We repent and turn away from our old life of sin. We must also place our faith in Christ who restores our relationship with God and receive eternal life to be with Him forever in Heaven. This trust is living our lives for Him in obedience as He is currently risen with all authority given to Him and promises to be with us forever. To do this, you need to pray to God right now. Prayer is having a conversation with God, since He is all powerful, He can and will listen to you. Mark 1:15, 1 John 1:9, Romans 10:9, Ephesians 2:8-10, Romans 8:38-39.
God - God is the creator of all things, including us. He made everything good, and he made us male and female in his image. We were made to have a relationship with God, and to worship Him. (Gen. 1-2). He desires that we have eternal life with him and grow in all wisdom as we walk with Him forever. God is Holy and three persons, one being, Father, Jesus Christ, and Holy Spirit. John 3:16
Mankind - The first humans Adam and Eve sinned or disobeyed God. They wanted to be like God, and be Gods. Sin entered the world which is anything that breaks God's law and disobedience toward God in anyway. We all follow the example and inherit the sin of Adam and Eve and have sinned against God. God is a Holy, all good, and perfect who will not let sin go unpunished. The punishment for sin is death and eternal separation from God in Hell. Romans 3:23, 6:23, Exodus 34:7