The Trinity doctrine is an illogical, non-Bible based teaching. Many are confused by this falsehood...and as a result do not feel close to God; or feel real love or real connection to/ for God because this erroneous teaching.John 7:29, is one of many verses in the Bible that disproves the Trinity doctrine.
Even though the doctrine of the Triune God seems illogical to you, does not mean that it is false. One can pull any Scripture out of context (as you did with John 7:29), and make a doctrine. Text taken out of its context is pretext.
The chief argument used against the doctrine of the Trinity is that it doesn't make sense. It doesn't seem reasonable. The answer to this is that we must believe the Bible regardless of whether or not it makes sense to our finite human understanding
(Hebrews 11:6).
BIBLE PROOF FOR THE TRINITY.
1. The New Testament plainly teaches the Trinity
(Matthew 28:19; John 14:16,26; 16:7-15; 2 Corinthians 13:14; Ephesians 4:4-6; 1 John 5:7).
2. Each Person of the Trinity is said to have separate personality
(John 16:7-15).
3. Each Person of the Trinity is co-equal one with another
(John 5:17-18; Philippians 2:6-7).
4. The Old Testament teaches that God is One in three Persons
Genesis 1:1. The Hebrew word for God here is
Elohim. This is a plural noun, but the verb is singular. This teaches that there is
one God in a plurality.
Genesis 1:26. Again God is spoken of as plural,
Elohim, yet we know from other Old Testament passages that God is one
(Deuteronomy 6:4).
Genesis 11:7-8. Here again God is spoken of in the plural and in the singular at the same time.
Deuteronomy 6:4. This verse could be translated, "Jehovah our Elohim is a united Jehovah." The word "one" refers to a
unity. The same word for one is used in
Genesis 2:24, speaking of the oneness of a husband and wife. This verse summarizes the Bible's teaching about God. He is one but exists in three Persons.
Psalms 45:6-7. According to
Hebrews 1:8-9, God the Father is speaking in
Psalm 45, and He is referring to the Son as God. Sometimes people ask, "If Jesus Himself was God, why did He address the Father as God?" The answer is that Jesus addressed the Father as God for the same reason that the Father addressed the Son as God-because they are both God.
Isaiah 48:16. Here the Lord Jesus, the Son of God, is speaking and referring to God the Father and the Holy Spirit
(John 18:20).
5. The Trinity is seen in Christ's life. At His incarnation and birth (Lu 1:35). At His baptism (Mt 3:16-17). At His resurrection
(Acts 2:24; John 2:19,21; 1 Peter 3:18).
6. Each Person of the Trinity is said to do the same works. Creation
(Isaiah 44:24; Colossians 1:16; Job 26:13). Indwelling the Christian
(Romans 8:9-10,11). Salvation
(Ephesians 2:18). The New Covenant
(Hebrews 9:14). Election
(1 Peter 1:2).