But that is who the Christian is talking about. John 1:18 says, “No one has ever seen God; the only God, who is at the Father's side, he has made him known.” Jesus makes known the invisible God for us to see. In John 14:8, Philip said, “Lord, show us the Father, and it is enough for us.” To this Jesus responded, “Have I been with you so long, and you still do not know me, Philip? Whoever has seen me has seen the Father. How can you say, ‘Show us the Father’” And Paul said in 2 Corinthians 4:6, “God, who said, ‘Let light shine out of darkness,’ has shone in our hearts to give the light of the knowledge of the glory of God in the face of Jesus Christ.”
In other words, Jesus is the yearbook picture that settles the issue of who is worshiping the true God and who is not. If a worshiper of God does not see in Jesus Christ the person of his God, he does not worship God. This is the resounding testimony of Jesus and the apostles as we see in the following texts.
Mark 9:37, “Whoever receives me, receives not me but him who sent me.” (See also Matthew 10: 40; Luke 9:48; John 13:20.)
John 5:23, “Whoever does not honor the Son does not honor the Father who sent him.”
1 John 2:23, “No one who denies the Son has the Father. Whoever confesses the Son has the Father also.”
Luke 12:9, “The one who denies me before men will be denied before the angels of God.”
John 15:23, “Whoever hates me hates my Father also.”
2 John 1:9, “Everyone who goes on ahead and does not abide in the teaching of Christ, does not have God. Whoever abides in the teaching has both the Father and the Son.”