B'resheet 20:1 Now Avraham journeyed from there toward the land of the Negev, and settled between Kadesh and Shur; then he sojourned in Gerar.
Negev - This is the southern portion of Israel.
G'rar-Philistine city between Israel and Egypt.
B'resheet 20:2 And Avraham said of Sarah his wife, "She is my sister." So Abimelech king of Gerar sent and took Sarah.
Avraham does the same thing he did before. The corresponding letter to this twentieth chapter is "Resh"-wickedness; the wicked. It is also the symbol of deciding between Greatness and Degradation. Sarah gets taken away because Avraham declares Sarah as his sister.
What foreshadowing are we privileged to view here in this whole chapter?
You may want to read, pray and listen to Ruach HaKodesh when you look at this whole chapter. Then look for the analogies and contrasts that appear one after another that point to a foreshadowing of a future event of our Messiah. It can have an effect on your future...one of greatness or one of degradation depending on your willingness to see it.
We have a half- sister and half-brother confirming their relationship with each other. The half-sister gets taken away from Avraham in order to save his life. Similarly, in the future we have Yeshua doing the same but He gets taken away to save the life of his sisters and brothers.
Matthew 12:46-50 While He was still speaking to the multitudes, behold, His mother and brothers were standing outside, seeking to speak to Him. And someone said to Him, "Behold, Your mother and your brothers are standing outside seeking to speak to You." But He answered the one who was telling Him and said, "Who is my mother and who are my brothers?" And stretching out His hand toward His disciples, He said, "Behold, My mother and my brothers! "For whoever does the will of My Father who is in heaven, he is my brother and sister and mother." NAS
Another person in the future also has a similar dream just like Avimelekh.
Pilate's wife said, have nothing to do with that righteous man: for last night I suffered greatly in a dream because of Him. In other words, her dream was telling her not to touch Yeshua. G-d was revealing to her that it may not be smart to touch this man. Avimelekh's dream points to Pilate's wife's dream. Could this only be a slight coincidence? Perhaps but read on. The similarities go on and on. You will see that too much happens in this chapter that corresponds to the future death of our Jewish Messiah. So, G-d tells Avimelekh in a dream that He has kept him from touching Sarah. Also, it could be trouble. We go on:
B'resheet 20:3-4 But G-d came to Abimelech in a dream of the night, and said to him, "Behold, you are a dead man because of the woman whom you have taken, for she is married." Now Abimelech had not come near her; and he said, "L-rd, will You slay a nation, even though blameless?
He declares ignorance for himself and his nation therefore He should be found blameless.
B'resheet 20:5 "Did he not himself say to me, 'She is my sister'? And she herself said, 'He is my brother.' In the integrity of my heart and the innocence of my hands I have done this."
Again, he claims innocence because he did not know that Sarah was Avraham's wife. This has bearing in the future concerning the Messiah. He would become a dead man for the sake of his betrothed bride even though He was already married to Israel and I will illustrate at the end of the chapter.
B'resheet 20:6-7 Then G-d said to him in the dream, "Yes, I know that in the integrity of your heart you have done this, and I also kept you from sinning against Me; therefore I did not let you TOUCH her. Now therefore, restore the man's wife, for he is a prophet, and he will pray for you, and you will live. But if you do not restore her, know that you shall surely die, you and all who are yours."
G-d says Avraham was a prophet. Indeed he is and all his actions are prophetic of a future prophet. What is also interesting is that G-d tells Avimelekh that in order to be saved He would have to go through Avraham. Avraham was Avimelekh's mediator. This gives us the picture of the new covenant were the Messiah is our mediator with the Father for eternal salvation. Of course, this does not replace the Avrahamic covenant. Also we can think of our relationship with Yeshua as His betrothed and He will punish those that harm us or those that try to take Him away or try to stop others from believing and following Him. If you don't want the only mediator to save you from G-d's wrath that is your choice but to stop another or to keep another from Him and from His mercy it will not be well with you.
1 Timothy 2:5-6 For there is one G-d, and one mediator between G-d and men, the man Yeshua HaMashiach; Who gave himself a ransom for all, to be testified in due time.
Galatians 3:18-20 For if the inheritance be of the law, it is no more of promise: but G-d gave it to Avraham by promise. What then was the purpose of the law? It was added because of transgressions, till the seed should come to whom the promise was made; and it was ordained by angels in the hand of a mediator. Now a mediator is not a mediator of one, but G-d is one.
Hebrews 7:24-25 He, on the other hand, because He abides forever, holds His priesthood permanently. Since, also, He is able to save forever those who draw near to G-d through Him, since He always lives to make intercession for them. NAS
The Word says beware to those that keep the children from coming to Him.
Matt 23:13-15 "But woe to you, scribes and Pharisees, hypocrites, because you shut off the kingdom of heaven from men; for you do not enter in yourselves, nor do you allow those who are entering to go in. ["Woe to you, scribes and Pharisees, hypocrites, because you devour widows' houses, even while for a pretense you make long prayers; therefore you shall receive greater condemnation.] "Woe to you, scribes and Pharisees, hypocrites, because you travel about on sea and land to make one proselyte; and when he becomes one, you make him twice as much a son of Gehenna as yourselves. NAS