God's account of his creation is part and parcel of the gospel. A person with genuine faith believes what Jesus said about both heavenly and earthly things. "If I have told you earthly things, and ye believe not, how shall ye believe, if I tell you of heavenly things?" John 3:12.
Jesus is God. Jesus created all things in heaven and on earth. See Colossians 1:16-18. God has revealed himself through his creation.
"[T]hat which may be known of God is manifest in them; for God hath shewed it unto them. For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and Godhead; so that they are without excuse." Romans 1:19-20.
If men have a misunderstanding of God's creation, they will also have a misunderstanding of who God is. If people believe in a creation that does not exist, they consequently also believe in a creator that does not exist. It is essential, therefore, to have an accurate understanding of God's creation. God did not make a movable, spherical earth. If men believe in a heliocentric creation, they will necessarily believe in a heliocentric creator. A heliocentric creation does not exist. So also, a heliocentric creator does not exist. A heliocentric creator is a false god. We have been warned to avoid the preaching of a false gospel, which presents a false Jesus.
"For if he that cometh preacheth another Jesus, whom we have not preached, or if ye receive another spirit, which ye have not received, or another gospel, which ye have not accepted, ye might well bear with him." 2 Corinthians 11:4.