There are a number of verses that speak of the plurality of God.
Genesis 1:26 - "Let us make man in our image, in our likeness". The word for God is in its plural form here.
Genesis 11:6-7 - "The Lord said ..... 'let us go down and confuse their language'."
Isaiah 6:8 - "Who will go for us?"
The Christian Gospel is about the fact that the Word, who is God, became flesh - God himself took on flesh, and God himself paid the price for our sin.
Jesus told his disciples to baptise in the name of the Father, the Son and the Holy Spirit, Matthew 28:19-20.
The Father, he Son and the Spirit are all God, yet there is only one God.
I read the Bible and see God as a Trinity.
I do not read the Bible and see, or learn, that the earth is flat.
The Bible says that God created the world and the universe.
It does not teach any more than that; it does not talk of other planets and the earth's position in relation to them. It doesn't talk about the nature and structure of the Solar system; only says that God made it.
Satanic lie? What Satanic lie?
I am certain that Satan wants to keep people's eyes off Jesus and uses any academic debate or niggling argument he can think of to distract us from God. But he doesn't care about the shape of the earth, or anything - as long as it's not cross shaped, because that's where his power was broken.
The King is among us and in us - if we ask him to be - and wants us to proclaim his kingdom and take it everywhere.
GOD made outer space.
Genesis makes it clear that God created everything. John 1:1-3 makes it clear that nothing was created without Jesus.