The same way that God gave laws to Israel, to keep wickedness out of Israel, is the similar purpose to keep evil from the church.
Look at Deuteronomy 13, when men would entice anyone to idol worship, their family members or close friend, the command was to kill them as they sought to thrust the people of Israel away from the Lord, and all Israel would see and fear, and do no more such wickedness as that among them.
Deuteronomy 21 shows the son of the men of Israel, who will not obey the voice of their father even though they chastised him, then they are commanded to bring him to the elders and show what the son has done, that he is stubborn and rebellious and would not obey their voice, that he is a glutton and a drunk, and then they stone him until he dies, to put evil away from among them, and all Israel shall hear and fear.
Acts 5, has example of Jewish believers having satan filling their heart, to lie to the Holy Ghost, agreeing together to tempt the Lord. They die immediately from hearing these words, and great fear came upon all the church, and upon as many as heard these things.
Deuteronomy 13:6 If thy brother, the son of thy mother, or thy son, or thy daughter, or the wife of thy bosom, or thy friend, which is as thine own soul, entice thee secretly, saying, Let us go and serve other gods, which thou hast not known, thou, nor thy fathers;
7 Namely, of the gods of the people which are round about you, nigh unto thee, or far off from thee, from the one end of the earth even unto the other end of the earth;
8 Thou shalt not consent unto him, nor hearken unto him; neither shall thine eye pity him, neither shalt thou spare, neither shalt thou conceal him:
9 But thou shalt surely kill him; thine hand shall be first upon him to put him to death, and afterwards the hand of all the people.
10 And thou shalt stone him with stones, that he die; because he hath sought to thrust thee away from the Lord thy God, which brought thee out of the land of Egypt, from the house of bondage.
11 And all Israel shall hear, and fear, and shall do no more any such wickedness as this is among you.
Deuteronomy 21:18 If a man have a stubborn and rebellious son, which will not obey the voice of his father, or the voice of his mother, and that, when they have chastened him, will not hearken unto them:
19 Then shall his father and his mother lay hold on him, and bring him out unto the elders of his city, and unto the gate of his place;
20 And they shall say unto the elders of his city, This our son is stubborn and rebellious, he will not obey our voice; he is a glutton, and a drunkard.
21 And all the men of his city shall stone him with stones, that he die: so shalt thou put evil away from among you; and all Israel shall hear, and fear.
Acts 5:1 But a certain man named Ananias, with Sapphira his wife, sold a possession,
2 And kept back part of the price, his wife also being privy to it, and brought a certain part, and laid it at the apostles' feet.
3 But Peter said, Ananias, why hath Satan filled thine heart to lie to the Holy Ghost, and to keep back part of the price of the land?
4 Whiles it remained, was it not thine own? and after it was sold, was it not in thine own power? why hast thou conceived this thing in thine heart? thou hast not lied unto men, but unto God.
5 And Ananias hearing these words fell down, and gave up the ghost: and great fear came on all them that heard these things.
6 And the young men arose, wound him up, and carried him out, and buried him.
7 And it was about the space of three hours after, when his wife, not knowing what was done, came in.
8 And Peter answered unto her, Tell me whether ye sold the land for so much? And she said, Yea, for so much.
9 Then Peter said unto her, How is it that ye have agreed together to tempt the Spirit of the Lord? behold, the feet of them which have buried thy husband are at the door, and shall carry thee out.
10 Then fell she down straightway at his feet, and yielded up the ghost: and the young men came in, and found her dead, and, carrying her forth, buried her by her husband.
11 And great fear came upon all the church, and upon as many as heard these things.
Israel had fear at one time when hearing the judgement of God, the believers had fear in the church one time in hearing the judgement of God.
If Israel had continued to fear Gods judgement, they would have continued to cast out evil from among them, but they instead all became the idol worshippers.
If the believers hearing the example of those who lied to the Holy Ghost, continued to fear when they heard these things, they would have continued to put away wicked persons from among them, but instead they left the covetous idol worshippers in the church.
Paul gave the reasons for that too, as those grievous wolves entered the flock, not sparing them, and among themselves men arose speaking perverse things to draw away disciples after them. ( to perverse doctrines.)
If Israel had obeyed instead of disobey, that would keep the evil of idolatry away, if the church had obeyed to put away the evil persons of coveting idolatry, they would have kept the wolves away, but the wolves entered because they did not put them away.
Acts 20:28 Take heed therefore unto yourselves, and to all the flock, over the which the Holy Ghost hath made you overseers, to feed the church of God, which he hath purchased with his own blood.
29 For I know this, that after my departing shall grievous wolves enter in among you, not sparing the flock.
30 Also of your own selves shall men arise, speaking perverse things, to draw away disciples after them.
