Jeremiah 42:20-22

He now adds another circumstance, that they had sent him under the pretense of rare piety, as though they were in every way ready to render obedience to God. But he first says that they had deceived themselves, or had been deceived. The verb תעה, toe, from which the Hithpael comes, means to err or go astray. But interpreters do not agree; for some give this explanation, that they deceived the Prophet in their hearts, that is, that they craftily retained their perverse design of going to Egypt, and at the same time professed that they were ready to obey. But as the Prophet’s name is not mentioned here, this explanation seems unnatural. I therefore prefer the other explanation, that they deceived themselves; and ב, beth, is here redundant, as in many places: Ye deceived, then, your own souls, when ye sent me, he says, to Jehovah The Prophet intimates that when they sought to act craftily they were deceived; for God is wont to discover the astute, and when they devise this or that, they only weave snares and toils for themselves; and we see that craftiness ever brings the ungodly to ruin. The Prophet, according to this sense, derides that perverse affectation of astuteness, when the ungodly seek to deceive God; and he says that they deceived themselves, as we see also daily. Then he says that they themselves had been the authors of the evil, for they had brought themselves to ruin by their astute and crafty counsel, when they sent him to Jehovah. The כי, ki, is to be taken here as an adverb of time, When ye sent me to Jehovah your God, saying, Pray for us.

He reproves them not only for perfidy, but also for sacrilege, because they wickedly profaned the name of God. For it. was not to be endured that they should pretend a regard for religion, and testify that they would be obedient to God, and should at the same time cherish in their hearts that perverse intention which afterwards they discovered. And hence he not only relates that he had been sent, but that he had also been solicited to intercede for them. It was then a twofold sacrilege, for they had asked what would please God, and afterwards disregarded the prophecy, — and then they offered a prayer, and when God gave them an answer by his servant., they counted it as nothing! We now perceive why Jeremiah so expressly mentioned these two things.