Ex 3:14, 20:2, Mt 16:20-21, Mt 26:63-64, Mk 14:61-62, Lk 22:67-70, Jn 4:25-26, Jn 20:31
In the Old Testament, God revealed Himself as God. (Ex 34:5-6, Ex 3:14, Ex 20:2)
Ex 34:5 And the Lord descended in the cloud, and stood with him there, and proclaimed the name of the Lord. 6 And the Lord passed by before him, and proclaimed, The Lord, The Lord God, merciful and gracious, longsuffering, and abundant in goodness and truth,
Ex 3:14 And God said unto Moses, I Am That I Am: and he said, Thus shalt thou say unto the children of Israel, I Am hath sent me unto you.
Ex 20:2 I am the Lord thy God, which have brought thee out of the land of Egypt, out of the house of bondage.
Jesus revealed Himself as the Christ to His disciples and people. (Matthew 16:20-21, Mark 26:63-64. Mark 14:61-62. Luke 22:67-70, John 4:25-26)
Matthew 16:20 Then charged he his disciples that they should tell no man that he was Jesus the Christ. 21 From that time forth began Jesus to shew unto his disciples, how that he must go unto Jerusalem, and suffer many things of the elders and chief priests and scribes, and be killed, and be raised again the third day.
Mt 26:63 But Jesus held his peace, And the high priest answered and said unto him, I adjure thee by the living God, that thou tell us whether thou be the Christ, the Son of God. 64 Jesus saith unto him, Thou hast said: nevertheless I say unto you, Hereafter shall ye see the Son of man sitting on the right hand of power, and coming in the clouds of heaven.
Mark 14:61 But he held his peace, and answered nothing. Again the high priest asked him, and said unto him, Art thou the Christ, the Son of the Blessed? 62 And Jesus said, I am: and ye shall see the Son of man sitting on the right hand of power, and coming in the clouds of heaven.
Luke 22:67 Art thou the Christ? tell us. And he said unto them, If I tell you, ye will not believe: 68 And if I also ask you, ye will not answer me, nor let me go. 69 Hereafter shall the Son of man sit on the right hand of the power of God. 70 Then said they all, Art thou then the Son of God? And he said unto them, Ye say that I am.
John 4:25 The woman saith unto him, I know that Messias cometh, which is called Christ: when he is come, he will tell us all things. 26 Jesus saith unto her, I that speak unto thee am he.
If we believe in Jesus as the Christ, we have life. (John 20:31)
John 20:31 But these are written, that ye might believe that Jesus is the Christ, the Son of God; and that believing ye might have life through his name.