Isaiah 9:6 calls the Son the everlasting Father. Jesus is the Son prophesied about and there is only one God (Malachi 2:10; Ephesians 4:6), so Jesus is (equal to) God.
Colossians 2:9 proclaims that all the fullness of the Godhead dwells in Jesus.
Jesus taught that He was the God. Jesus said to the Pharisees 'You neither know me, nor my Father: if ye had known me, ye should have known my Father also" (John 8:19). Jesus went on to say, "I said therefore unto you, if ye believe not that I am he, ye shall die in your sins" (John 8:24).
he in the verse was not in the original Greek showing that Jesus was really identifying Himself with the "I AM" of Exodus 3:14. "They understood not that he spake to them of the Father" (John 8:27). Jesus tried to tell them that He was God: the I AM, and that if they did not accept Him as God they would die in their sins.
In John, Jesus said "I and my Father are one" (John 10:30) "And he that seeth me seeth him that sent me." (12:45) and again in John 14:7 Jesus told His disciples, "If ye had known me, ye should have known my Father also: and from henceforth ye know him, and have seen him." Upon hearing this statement, Philip requested, "Lord, shew us the Father, and it sufficeth us" (John 14:8). In other words, he asked that Jesus show them the Father and then they would be satisfied. Jesus' answer was, "Have I been so long time with you, and yet hast thou not known me, Philip? he that hath seen me hath seen the Father; and how sayest thou then, Shew us the Father? Believest thou not that I am in the Father, and the Father in me? the words that I speak unto you I speak not of myself: but the Father that dwelleth in me, he doeth the works. Believe me that I am in the Father and the Father in me: or else believe me for the very works' sake" (John 14:9-11).
Jesus said, "The Father is in me, and I in him" (John 10:38).
Jesus promised to be the Father of all overcomers (Revelation 21:6-7).
"I will not leave you as orphans" (NIV), or in other words - I will not leave you fatherless: I will come to you. Jesus promised that He would not leave His disciples fatherless and so he sends the Holy Spirit, the third beautiful aspect of the mysterious trinity.
Always learning and reflecting... excuse any inaccuracies and lack of technical terminology, fellow theologians...I'm just thinking out loud.