'Alliance' in the Bible

Now Solomon became a son-in-law to Pharaoh king of Egypt [and formed an alliance] by taking Pharaoh’s daughter [in marriage]. He brought her to the City of David [where she remained temporarily] until he had finished building his own house (palace) and the house of the Lord and the wall around Jerusalem.

After some years the Syrian king of the North and the Egyptian king of the South will make an alliance; the daughter (Berenice) of the king of the South will come to the king of the North to make an equitable and peaceful agreement (marriage); but she will not retain the power of her position, nor will he retain his power. She will be handed over with her attendants and her father as well as he who supported her in those times.

After an alliance is made with him he will work deceitfully, and he will go up and gain power with a small force of people.