'Withdraw' in the Bible

Those on the rocky soil are the people who, when they hear, receive and welcome the word with joy; but these have no firmly grounded root. They believe for a while, and in time of trial and temptation they fall away [from Me and abandon their faith].

But Peter said, “Ananias, why has Satan filled your heart to lie to the Holy Spirit and [secretly] keep back for yourself some of the proceeds [from the sale] of the land?

So in the present case, I say to you, stay away from these men and let them alone, for if this plan or action is of men [merely human in origin], it will fail and be destroyed;

Now we command you, believers, in the name of our Lord Jesus Christ and by His authority, that you withdraw and keep away from every brother or sister who leads an undisciplined life and does not live in accordance with the tradition and teaching that you have received from us.

But refuse [to enroll the] younger widows, for when they feel their natural desires in disregard of Christ, they wish to marry again,

and perpetual friction between men who are corrupted in mind and deprived of the truth, who think that godliness is a source of profit [a lucrative, money-making business—withdraw from them].