Charles H. Spurgeon on Psalms 125:3

For the rod of the wicked shall not rest upon the lot of the righteous. The people of God are not to expect immunity from trial because the Lord surrounds them, for they may feel the power and persecution of the ungodly. Isaac, even in Abraham's family, was mocked by Ishmael. Assyria laid its sceptre even upon Zion itself. The graceless often bear rule and wield the rod; and when they do so they are pretty sure to make it fall heavily upon the Lord's believing people, so that the godly cry out by reason of their oppressors. Egypt's rod was exceeding heavy upon Israel, but the time came for it to be broken. God has set a limit to the woes of his chosen: the rod may light on their portion, but it shall not rest upon it. The righteous have a lot which none can take from them, for God has appointed them heirs of it by gracious entail: on that lot the rod of the wicked may fall, but over that lot it cannot have lasting sway. The saints abide for ever, but their troubles will not. Here is a good argument in prayer for all righteous ones who are in the hands of the wicked. Lest the righteous put forth their hands unto iniquity. The tendency of oppression is to drive the best of men into some hasty deed for self deliverance or vengeance. If the rack be too long used the patient sufferer may at last give way; and therefore the Lord puts a limit to the tyranny of the wicked. He ordained that an Israelite who deserved punishment should not be beaten without measure: forty stripes save one was the appointed limit. We may therefore expect that he will set a bound to the suffering of the innocent, and will not allow them to be pushed to the uttermost extreme. Especially in point of time he will limit the domination of the persecutor, for length adds strength to oppression, and makes it intolerable; hence the Lord himself said of a certain tribulation, "except those days should be shortened, there should no flesh be saved; but for the elect's sake those days shall be shortened." It seems that even righteous men are in peril of sinning in evil days, and that it is not the will of the Lord that they should yield to the stress of the times in order to escape from suffering. The power and influence of wicked men when they are uppermost are used to lead or drive the righteous astray; but the godly must not accept this as an excuse, and yield to the evil pressure; far rather must they resist with all their might till it shall please God to stay the violence of tim persecutor, and give his children rest. This the Lord here promises to do in due time.