Robbers - literally, tearers, those who rob with violence. The temple was the place which sheltered them. It had been consecrated to God. Now that it harbors miscreants, must it not as inevitably be destroyed as a den of robbers would be by any righteous ruler?

Is this house, which is called by my name,.... Meaning the temple:

become a den of robbers in your eyes? or do you look upon it, and make use of it, as thieves do of dens; who, when they have robbed and murdered men, betake themselves to them, not only to share their spoil, but to hide themselves? just so those thieves, murderers adulterers, perjurers, and idolaters, after they had committed such gross enormities, came into the temple and offered sacrifices; thinking hereby to cover their sins, and expiate the guilt of them, and to be looked upon as good men, and true worshippers of God, when they were no better than thieves and robbers; and such were the Pharisees in Christ's time, and such was the temple as made by them; see Matthew 21:13,

behold, even I have seen it, saith the Lord; not only all the abominations committed by them, but the use they made of the temple and the worship of it; all the hypocrisy of their hearts, and the inward thoughts of them, and their views and intentions in their offerings and sacrifices; as well as what ruin and destruction the Lord designed to bring shortly upon them, and upon that house which they had made a den of robbers; as follows:

To expose the senselessness of such an idea, God asks if they take the temple for a den of robbers? "In your eyes" goes with היה : is it become in your eyes, i.e., do ye take it for such? If thieves, murderers, adulterers, etc., gathered to the temple, and supposed that by appearing there they procured the absolution of their sins, they were in very act declaring the temple to be a robbers' retreat. פּריץ, the violent, here: the house-breaker, robber. I, too, have seen, sc. that the temple is made by you a den of thieves, and will deal accordingly. This completion of the thought appears from the context.

Is this house, which is called by my name, become {c} a den of robbers in your eyes? Behold, even I have seen it, saith the LORD.

(c) As thieves hidden in holes and dens think themselves safe, so when you are in my temple, you think to be covered with the holiness of it, and that I cannot see your wickedness, Mt 21:13.

7:11 A den - Do you look upon this house as a sanctuary for robbers and murderers.

11. den of robbers-Do you regard My temple as being what robbers make their den, namely, an asylum wherein ye may obtain impunity for your abominations (Jer 7:10)?

seen it-namely, that ye treat My house as if it were a den of thieves. Jehovah implies more than is expressed, "I have seen and will punish it" (Isa 56:7; Mt 21:13).

7:1-16 No observances, professions, or supposed revelations, will profit, if men do not amend their ways and their doings. None can claim an interest in free salvation, who allow themselves in the practice of known sin, or live in the neglect of known duty. They thought that the temple they profaned would be their protection. But all who continue in sin because grace has abounded, or that grace may abound, make Christ the minister of sin; and the cross of Christ, rightly understood, forms the most effectual remedy to such poisonous sentiments. The Son of God gave himself for our transgressions, to show the excellence of the Divine law, and the evil of sin. Never let us think we may do wickedness without suffering for it.