Thank you for the biblical question, “Who is the only One who fully knows and fully loves you, John 4:4?”
The One who fully knows and fully loves me is the Creator God through his Son Jesus Christ.
For one’s consideration, here are some thoughts regarding John 4:4:
A. No orthodox/conservative Jew would go in or through Samaria.
The Jews despised the Samaritans because they felt the Samaritans were an intermixed peopled group rather from the line of Abraham. A Jew would avoid the Samarian territory at all cost.
B. Jesus was directed to go into and through Samaria.
The verb, must, indicate not an option, but a necessity. It would imply at least directed or commanded to an action. Jesus took his 12 disciples and crossed into Samaria. His disciples knew that this was against religious and social customs.
C. God the Father directed Jesus to go into Samaria.
Jesus states that whatever he sees the doing, he does it. Jesus lives in submission to the Father. He doesn’t act independently of the Father.
Jesus says in John 5, “Jesus gave them this answer: “Very truly I tell you, the Son can do nothing by himself; he can do only what he sees his Father doing, because whatever the Father does the Son also does. 20 For the Father loves the Son and shows him all he does. Yes, and he will show him even greater works than these, so that you will be amazed” (NIV).
D. God the Father showed his love to a despised Samaritan woman.
The Jews thought as they despised the Samaritans that God would despised them as well. They were God’s chosen people and the Samaritans were not God’s chosen people.
In the context, not only was the woman of a Samaritan race, but she was divorced 5 times. What made it worse for her was that she was living in immorality with another man who is not her husband. She was an outcast among the Samaritans and definitely by the Jews. She would never find redeeming grace and mercy. She was a hopeless case.
And of all the people in Samaria, God had Jesus arrived when that woman came to the well. The encounter was not by random chance but a divine appointment. The disciples went into town to buy some food, not that they would eat or drink with a Samaritan, but Jesus asked that Samaritan woman a drink from her bucket of water. No Jew has ever done that before.
The person who fully knows and loves us is God the Father. One’s past or present position or possession doesn’t impress God. God sees passed our appearances to one’s heart. If God could and would love that Samaritan woman, certainly he would love you and me.
SUMMARY: God the Father is the one who knows us intimately and loves us intimately regardless of our past, present or future standing in life.
For more perspectives:
https://www.quora.com/Who-is-the-only-One-who-fully-knows-and-fully-loves-you-John-4-4