Is the Godhead, who and what is God, relevant to living life each day? Some do not think so. A wrong idea, however, about God's nature can affect our spiritual life. Many do not even know who or what they worship, as Jesus told the woman from Samaria.
"You do not know what you worship. We know what we worship, for salvation is of the Jews" (John 4:22, Holy Bible in Its Original Order - A Faithful Version (HBFV) throughout, unless stated).
Our Father does want us to know who He is and to worship him in a certain way.
"God is Spirit, and those who worship Him must worship in spirit and in truth" (verse 24)
In order to combat the Gnostics and their false doctrines that Christ only appeared to be made of flesh when he came to die for man's sin, but really was not (2John 7; 1John 4:2-3), John emphasizes his humanity but affirms his ultimate Deity.
"In the beginning was the Word, and the Word was with God, and the Word was God. He was in the beginning with God. All things came into being through Him, and not even one thing that was created came into being without Him . . . And the Word became flesh, and tabernacled among us" (John 1:1 - 3, 14)
Jesus is, without a doubt, 'the Word.' Another key section showing the true identity of Jesus is in John 5, where the Jews wanted to murder Christ because he made himself equal to God (John 5:17 - 18).
Unlike the Jews of his day, Christ referred to God the Father in a way they believed was blasphemous. Jesus also said in John something the Jews wanted him dead for proclaiming. He stated 'I and the Father are one' (John 10:30), something the Jews fully understood referenced the God of all creation. After the Lord spoke these words they sought to immediately stone him! Jesus side-stepped the accusations thrown at him by quoting Psalms 82:6 to affirm he was God's son.
Consider the following verse in the eighth chapter of John.
"Jesus said to them, 'Truly, truly I say to you, before Abraham was born, I AM.'" (John 8:58)
Christ is directly implying He was the God or Jehovah who spoke to Moses through a burning bush (Exodus 3:14). Note carefully what the Jews wanted to do after Jesus made the above statement.
"Then they picked up stones to throw at Him."
Why did they want to kill Jesus? For making a blasphemous statement! They fully understood what Jesus meant by his statement. Christ also made several other statements about himself, especially in the gospel of John, that none of the bible's true prophets would even dare to make (see John 6:35, 14:6, 8:12, 15:5, etc.)
Only the divine can forgive sins
Only God can forgive sin, a prerogative that Jesus also claimed. After healing someone who was disabled Jesus told him something which some religious leaders immediately questioned.
"Now when Jesus saw their faith, He said to the paraplegic, 'Child, your sins have been forgiven you.' But some of the scribes were sitting there and reasoning in their hearts, 'Why does this man speak such blasphemies? Who has the power to forgive sins, except one, and that is God?'" (Mark 2:5, see also Luke 5:19)
Notice that Jesus did not correct the scribes and their interpretation of him being able to generically forgive sins.
If Christ was worshipped by anyone without correcting them (see Revelation 22:8 - 9, etc.) that would prove he was very Gody. Some will reply that the word 'worshipped' in the New Testament can refer to people paying their respects to a king, etc. Note what Peter and the disciples said when Christ walked on the water and had the winds become calm the minute he got into their boat.
"And those in the ship came and worshipped Him, saying, 'You are truly the Son of God.'" (Matthew 14:33)
Notice also that the apostles, right after Jesus' resurrection, came and worshipped Him as God (Matthew 28:9; cf. verse 17).
In the first chapter of the book of Hebrews it states the angels worshipped Christ. Is he then just a 'super' angel worthy of worship? Let's look at verse 8.
"But on the other hand, of the Son He says, 'Your throne, O God, is into the ages of eternity; a scepter of righteousness is the scepter of Your kingdom."
The Apostle Paul directly applies to the Lord the Psalmist's words about Yahweh (Psalm 102:18 - 22). Because of this he is worthy of being worshipped by angels! The Apostle Paul directly states that Christ created all things (Ephesians 3:9).
"Still, to us there is one God the Father, from Whom are all things, and we are in Him; and one Lord Jesus Christ, by Whom are all things, and we are by Him." (1Corinthians 8:6, see also Colossians 1:16 - 17).
If Jesus Christ made everything, then logically he himself could not have been one of the things made! The book of Revelation contains several texts that assert Christ's Deity.
"'I am the Alpha and the Omega, the Beginning and the Ending,' says the Lord,'" (Revelation 1:8, NKJV).
Alpha and Omega are the first and last letters of the Grecian alphabet. Revelation 22 tells us that Jesus, yet again, referred to himself as the Alpha and Omega (Revelation 22, see also 1:17 - 18, 2:8). The apostle Paul also affirms Jesus' Deity when he states in Colossians 2.
"For in Him dwells all the fullness of the Godhead bodily;" (v. 9)
Since Jesus possesses "all the fullness" of the Godhead he possesses the divine nature. Paul tells us Jesus was 'the rock' or divine Being who led the ancient Israelites throughout their wilderness journeys (1Corinthians 10:4).
Similarly, Paul in Romans 14 calls Christ the Lord then applies an Old Testament text about "the Lord" (the Eternal) to Him, and finishes stating we shall all be judged by him (Romans 14:9 - 12).
There exists still more Biblical evidence that Jesus is God. Although those who believe in the Trinity are wrong, their case that Jesus is part of the Godhead is Biblically sound.