I presume you have posted these references because you feel they are contradictions, although you did not comment on them.
Did Anyone See God?
"And Jacob called the name of the place Pe-ni'el: for I have seen God face to face, and my life is preserved."
Genesis 32:30
You do not understand these because you deny the fact that an all powerful God is capable of appearing to man in human form for the purpose of communicating His will. It is of course true that no man has seen God in His fullness because to do so would mean certain death. Since I believe in the Trinity, I believe when God appears in Human form He appears as Christ, and thus Jacob struggled with God, yet He did not die.
Ge 18:1 Then the LORD appeared to him by the terebinth trees of Mamre,[a] as he was sitting in the tent door in the heat of the day. 2 So he lifted his eyes and looked, and behold, three men were standing by him;
Ge 18:22 Then the men turned away from there and went toward Sodom, but Abraham still stood before the LORD.
Ge 19:1 Now the two angels came to Sodom in the evening, and Lot was sitting in the gate of Sodom. When Lot saw them, he rose to meet them, and he bowed himself with his face toward the ground.
Note that there were three men, two were angels, one was the Lord in human form.
"No man hath seen God at any time; the only begotten Son, which is in the bosom of the Father, he hath declared him."
John 1:18
Of course only Christ knows what God looks like in His fullness.
2 or 1 Sons?
"For it is written that Abraham had two sons, one by the slave woman and the other by the free woman."
Galatians 4:22
This is of course true. Even Islam believes this.
"By faith Abraham, when God tested him, offered Isaac as a sacrifice. He who had received the promises was about to sacrifice his one and only son,"
Hebrews 11:17
Ge 17:17 Then Abraham fell on his face and laughed, and said in his heart, “Shall a child be born to a man who is one hundred years old? And shall Sarah, who is ninety years old, bear a child?” 18 And Abraham said to God, “Oh, that Ishmael might live before You!” 19 Then God said: “No, Sarah your wife shall bear you a son, and you shall call his name Isaac; I will establish My covenant with him for an everlasting covenant, and with his descendants after him. 20 And as for Ishmael, I have heard you. Behold, I have blessed him, and will make him fruitful, and will multiply him exceedingly. He shall beget twelve princes, and I will make him a great nation. 21 But My covenant I will establish with Isaac, whom Sarah shall bear to you at this set time next year.” 22 Then He finished talking with him, and God went up from Abraham.
It is quite clear that God told Abraham that the covenant would be established through Sarah's son, Issac. So it is true that there was only one son as far as the covenant was concerned.
What did Jesus Drink on the Cross?
"They gave him vinegar to drink mingled with gall: and when he had tasted thereof, he would not drink."
Matthew 27:34
Christ tasted the drink, and refused it when He found out it's contents.
"And they gave him to drink wine mingled with myrrh: but he received it not."
Mark 15:23
If someone hands something to you, and you look at it, determine that you do not want it, and hand it back, have you received it?