וישלחו מן המחנה, after the Torah had described the procedures of encamping, it had to tell us that ritually impure people had to be removed from the camp(s).

חטאת האדם, This is also because of גזל הגר, robbery from a convert who left no children after death and to whom no restitution can be made, nor to any of his non existent heirs. This is the reason why this has been repeated here.

והשיב את אשמו, the capital value minus the penalty.

מלבד איל, the eyl ha-asham mentioned in Leviticus 5,25, compare Rashi.

האשם המושב, the capital value, this will be returned (paid back to the priests who act as the deceased convert’s redeemer.)

וכל תרומה , the first tithe the Israelites set aside from their crops for the priests, as well as the ten per cent the Levites set aside for the priests from the tithe they had received from the ordinary Israelites as spelled out in Numbers chapter 18.

איש אשר יתן לכהן, something donated voluntarily which is appropriate to become the priest’s such as charamim, personal possessions sanctified to become the property of the Temple treasury.

לו יהיה, it will become the property of the priests officiating on that date.

An aggadic Midrash (B’rachot 63) the words איש אשר יתן לכהן mean that he who meticulously gives to the priest his due, will eventually find himself becoming rich. The Talmud derives this exegesis from the apparent redundancy of the words in our verse.

כי תשטה, she deviates from “the straight and narrow.” The word and its spelling is used by Solomon in this sense in Proverbs 4,15 שטה מעליו, “pass it by!” Compare also Hoseah 5,2 ושחטה שטים העמיקו, “people who detoured to escape the guards, etc.”

ועד אין בה, to testify that she had been guilty of adultery,

והיא לא נתפשה, she had not been raped. If she had been taken to a secret hideout and raped she is considered as being in the clear.

מים קדושים, the waters from the basin in front of the sanctuary.

לאלה ולשבועה, as a curse and as an oath. When a person demands that someone confirms a statement he had made to him by an oath, he tells that person “swear to me that if what you have told me is false that you will become an accursed person.” The swelling of the Sotah’s belly and the collapse of her hips are signs of such a curse.

ונזרעה זרע, she will become pregnant.

ונקה האיש מעון, even though he had been responsible for his wife coming to such a tragic end due to his having been jealous of her. Personally, I think the Torah tries to tell us that if her husband had remained silent about his suspicions, he would have been guilty, whereas now he is not. Seeing that once he was suspicious of her fidelity he was forbidden to cohabit with her, he had no other option. Instead, היא תשא את עוונה, she will have to bear the burden of her guilt. Seeing that she had committed adultery she has to accept the consequences.