John 5:23

The reason for this delegation is that all may honor the Son as they honor the Father. Subordination usually results in less honor. The Father has guaranteed that the Son will receive equal honor with Himself by committing the role of judging entirely to Him. Therefore failure to honor the Son reflects failure to honor the Father. Conversely honoring the Son honors the Father (cf. Philippians 2:9-11). God will not share His honor with another (Isaiah 42:8; Isaiah 42:10-12). Consequently for Him to share His honor with the Son must mean that the Son and the Father are one in essence.

"The ’religious’ people who say that they worship God, but who deny the deity of Christ, have neither the Father nor the Son!" [Note: Wiersbe, 1:306.]

These people include Muslims, Jews, Mormons, Jehovah’s Witnesses, and Unitarian Universalists, if they believe what their churches teach.