The Early Church Fathers believed and taught that Jesus Christ, as the second person of the Trinity, was God. He spoke with the authority of God and did things that only God could do. It is the reason why He was accused of blasphemy.
The Church's Scriptures that support the Divinity of Christ:
The Word Became Flesh
1 In the beginning was the Word, and the Word was with God, and the Word was God. 2 He was in the beginning with God; 3 all things were made through him, and without him was not anything made that was made. 4 In him was life, and the life was the light of men.
John 1:1-4
The Testimony of John the Baptist: glory of Father's only Son, full of grace and truth
14 And the Word became flesh and dwelt among us, full of grace and truth; we have beheld his glory, glory as of the only Son from the Father. 15 John bore witness to him, and cried, "This was he of whom I said, 'He who comes after me ranks before me, for he was before me.' "
John 1:14-15
Jesus says, "if you knew me, you would know my Father."
19 They said to him therefore, "Where is your Father?" Jesus answered, "You know neither me nor my Father; if you knew me, you would know my Father also."
John 8:19
Jesus states, "Truly, truly, I say to you, before Abraham was, I AM."
58 Jesus said to them, "Truly, truly, I say to you, before Abraham was, I AM." 59 So they took up stones to throw at him; but Jesus hid himself, and went out of the temple.
John 8:58-59
The Father and I are one.
30 I and the Father are one." 31 The Jews took up stones again to stone him. 32 Jesus answered them, "I have shown you many good works from the Father; for which of these do you stone me?" 33 The Jews answered him, "It is not for a good work that we stone you but for blasphemy; because you, being a man, make yourself God."
John 10:30-33
Note: The Greek word that Jesus used in John 10:30-33 is the Greek equivalent of echad which is the Hebrew word used in Deuteronomy 6:4
See Exodus 3:14, 20:7; Leviticus 19:12, Leviticus 24:14-16.
The Father is in me and I am in the Father
37 If I am not doing the works of my Father, then do not believe me; 38 but if I do them, even though you do not believe me, believe the works, that you may know and understand that the Father is in me and I am in the Father."
John 10:37-38
Who ever sees me, sees the one who sent me — and — I have not spoken on my own authority
44 And Jesus cried out and said, "He who believes in me, believes not in me but in him who sent me. 45 And he who sees me sees him who sent me. 46 I have come as light into the world, that whoever believes in me may not remain in darkness. 47 If any one hears my sayings and does not keep them, I do not judge him; for I did not come to judge the world but to save the world. 48 He who rejects me and does not receive my sayings has a judge; the word that I have spoken will be his judge on the last day. 49 For I have not spoken on my own authority; the Father who sent me has himself given me commandment what to say and what to speak. 50 And I know that his commandment is eternal life. What I say, therefore, I say as the Father has bidden me."
John 12:44-50
Philip asks Jesus to show them the Father.
8 Philip said to him, "Lord, show us the Father, and we shall be satisfied." 9 Jesus said to him, "Have I been with you so long, and yet you do not know me, Philip?
He who has seen me has seen the Father; how can you say, `Show us the Father'?
10 Do you not believe that I am in the Father and the Father in me? The words that
I say to you I do not speak on my own authority; but the Father who dwells in me does his works. 11 Believe me that I am in the Father and the Father in me; or else believe me for the sake of the works themselves. 12 "Truly, truly, I say to you, he who believes in me will also do the works that I do; and greater works than these will he do, because I go to the Father.
John 14:8-12
Jesus accepts Thomas' "My Lord and my God!"
28 Thomas answered him, "My Lord and my God!" 29 Jesus said to him, "Have you believed because you have seen me? Blessed are those who have not seen and yet believe."
John 20:28-29
The Church of God he acquired with His Blood
28 Take heed to yourselves and to all the flock, in which the Holy Spirit has made you overseers, to care for the church of God which he obtained with the blood of his own Son.
Acts 20:28
In him we have redemption by His Blood
7 In him we have redemption through his blood, the forgiveness of our trespasses, according to the riches of his grace
Ephesians 1:7
For in him the whole fullness of deity dwells bodily
9 For in him the whole fullness of deity dwells bodily, 10 and you have come to fullness of life in him, who is the head of all rule and authority.
Colossians 2:9-10
Glory of our great God and Savior, Jesus Christ
11 For the grace of God has appeared for the salvation of all men, 12 training us to renounce irreligion and worldly passions, and to live sober, upright, and godly lives in this world, 13 awaiting our blessed hope, the appearing of the glory of our great God and Savior Jesus Christ, 14 who gave himself for us to redeem us from all iniquity and to purify for himself a people of his own who are zealous for good deeds.
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Titus 2:11-14
The Blood of His Son Jesus cleanses from all sin.
6 If we say we have fellowship with him while we walk in darkness, we lie and do not live according to the truth; 7 but if we walk in the light, as he is in the light, we have fellowship with one another, and the blood of Jesus his Son cleanses us from all sin.
1 John 1:6-7