The Bible teaches that God is One but exists in three Persons – God the Father, God the Son and God the Holy Spirit. All the three eternally and co-equally exist in the One Godhead. They are one in essence, but their functions are different.
Genesis 1:26; Deuteronomy 6:4; Psalm 45:6-7; Psalm 110:1; Matthew 3:16-17; Matthew 28:19; Luke 1:35; John 1:1; 2 Corinthians 13:14
The Bible teaches that God is Spirit. The Son was Spirit before His incarnation. At His incarnation, He became flesh, thus had a fleshly body. After His resurrection, He has a glorified body.
The Bible warns against any form of idol worship (images, crosses or physical idols).
Psalm 115:3-8; Psalm 135:15-18; Isaiah 44:9-20; Jeremiah 10:3-10; Habakkuk 2:18-20; Acts 17:29