Jesus, referring to His Father who sent Him. There are numerous more writings on this. Here are only a few.
44 However, Jesus cried out and said: “He that puts faith in me puts faith, not in me [only], but in him [also] that sent me; 45 and he that beholds me beholds [also] him that sent me. 46 I have come as a light into the world, in order that everyone putting faith in me may not remain in the darkness. 47 But if anyone hears my sayings and does not keep them, I do not judge him; for I came, not to judge the world, but to save the world. 48 He that disregards me and does not receive my sayings has one to judge him. The word that I have spoken is what will judge him in the last day; 49 because I have not spoken out of my own impulse, but the Father himself who sent me has given me a commandment as to what to tell and what to speak. 50 Also, I know that his commandment means everlasting life. Therefore the things I speak, just as the Father has told me [them], so I speak [them].”
And same scripture from another different Bible:
44 Jesus shouted to the crowds, “If you trust me, you are trusting not only me, but also God who sent me.45 For when you see me, you are seeing the one who sent me.46 I have come as a light to shine in this dark world, so that all who put their trust in me will no longer remain in the dark.47 I will not judge those who hear me but don’t obey me, for I have come to save the world and not to judge it.48 But all who reject me and my message will be judged on the day of judgment by the truth I have spoken.49 I don’t speak on my own authority. The Father who sent me has commanded me what to say and how to say it. 50 And I know his commands lead to eternal life; so I say whatever the Father tells me to say.”
John 8:38 – I am telling you what I saw when I was with my Father.
***John 8:14-18 – 14 Jesus told them, “These claims are valid even though I make them about myself. For I know where I came from and where I am going, but you don’t know this about me. 15 You judge me by human standards, but I do not judge anyone. 16 And if I did, my judgment would be correct in every respect because I am not alone. The Father who sent me is with me. 17 Your own law says that if two people agree about something, their witness is accepted as fact. 18 I am one witness, and my Father who sent me is the other.”
John 7:16 – Jesus told them, My message is not my own; it comes from God who sent me.
John 5:16-24 – Jesus explained,
JESUS CLAIMS TO BE THE SON OF GOD
16 So the Jewish leaders began harassing Jesus for breaking the Sabbath rules. 17 But Jesus replied, “My Father is always working, and so am I.”18 So the Jewish leaders tried all the harder to find a way to kill him. For he not only broke the Sabbath, he called God his Father, thereby making himself equal with God.
19 So Jesus explained, “I tell you the truth, the Son can do nothing by himself. He does only what he sees the Father doing. Whatever the Father does, the Son also does. 20 For the Father loves the Son and shows him everything he is doing. In fact, the Father will show him how to do even greater works than healing this man. Then you will truly be astonished. 21 For just as the Father gives life to those he raises from the dead, so the Son gives life to anyone he wants. 22 In addition, the Father judges no one. Instead, he has given the Son absolute authority to judge, 23 so that everyone will honor the Son, just as they honor the Father. Anyone who does not honor the Son is certainly not honoring the Father who sent him.
24 “I tell you the truth, those who listen to my message and believe in God who sent me have eternal life. They will never be condemned for their sins, but they have already passed from death into life.