Some Important Biblical Passages in the Trinitarian Controversy:

I. On the Arian side:

"The LORD created me at the beginning of his work, the first of his acts of old." (Proverbs 8:22, speaking of Wisdom

"Let all the house of Israel therefore know assuredly that God has made him both Lord and Christ, this Jesus whom you crucified." (Acts 2.36)

"He is the image of the invisible God, the first born of all creation . . ." ( Col 1:15 )

"Why do you call me good? No one is good but God alone." (Mark 10:18; parallels Matt 19:16-30; Luke 18:18-30)

“. . . Christ Jesus, who though he was in the form of God, did not count equality with God a thing to be grasped …” (Philippians 2:5-6)

“. . . for my Father is greater than I . . . " (John 14:28 )

"My doctrine is not mine, but his that sent me." (John 7:16)

"O my Father, if it be possible, let this cup pass from me: nevertheless, not as I will, but as thou wilt." (Matthew 26:39)

"My God, my God, why hast thou forsaken me?" (Matthew 27:46)

"But of that day and that hour no man knows, no, not the angels which are in heaven, neither the Son, but the Father." (Mark 13:32 )

"Who has gone into heaven, and is on the right hand of God" (Peter 3:22 )

Jesus came into being at a point in time (Micah 5:2)

"...God, the head of Christ" (1 Cor 11:3).

“When all things are subjected to him, then the Son himself will be subjected to him, that God may be everything to every one (1 Cor 15:28 ).

Jesus refers to, "My God and your God (John 20:17 ).

"One God, the Father ... one Lord, Jesus Christ" (1 Cor 8:6)

II. On the Athanasian side:

"He who has seen me has seen the Father.-I am in the father and the Father in me." (John 14:9)

"I and the Father are one." (John 10:30) 

"He reflects the glory of God and bears the very stamp of his nature...." (Heb 1:3)

"The LORD says to my lord, 'Sit at my right hand . . . "' (Psalm 110:1)

". . . he that hath seen me hath seen the Father" (John 17:22 );

“. . . Holy Father keep through thine own name those whom thou hast given me, that they may be one, as we are." (John 17:11)

"Beware lest any man spoil you through philosophy and vain deceit, after the tradition of men, after the rudiments of the world, and not after Christ. For in him dwells all the fullness of the Godhead bodily.” ( Col 3:8-9.)

Jesus declared, "Before Abraham, I Am" (John 8:58 compare w/ Exod 3:14 , "I Am who I Am").

Jesus also claimed to be "I Am" in Mark 14:62 and John 18:5-6.

Jesus claimed to be Yahweh by sharing in his glory (compare John 17:5 w/ Isa 42:8).

Jesus claimed to be equal with God by being able to forgive sins (Mark 2:5-11). 

Jesus claimed to be equal with God by being-able to raise the dead (John 5:21 , 25, 29; compare w/ Deut 32:19; 1 Sam 2:6).

Jesus claimed to be God by accepting worship (Matt. 14:33; 28:17; Mark 5:6; compare w/ Exod 20:1-4; Deut 5:6-9; Acts 14:15; Rev 22:8-9).

Jesus claimed to have equal authority with God (Matt 5: 21 ,22; 28:18-19; John 13:34 ; compare Matt 5:18 with Matt 24:35).

Thomas calls Jesus, "My Lord and My God" (John 20:28 ).

Jesus is the one in whom, "all the fullness of deity lives in bodily form" ( Col 2:9).

"...our great God and Savior, Jesus Christ" (Titus 2:13 ).

On both sides:

"In the beginning was the Word, and the Word was with God, and the word was [a] god" (John 1:1);