Matthew 18:9

Ver. 7-9. By offences are here meant stumbling blocks to souls, such persons or actions as are to others temptations to sin. The world, saith our Savour is full of temptations. Temptations to sin are on all hands, some enticing and persuading men to that which is evil, others setting them an example to it, others alluring them by promises, others by threatenings and punishments driving men to it as much as in them lieth: the world will one day find the evil and mischief of it. It must needs be that offences come; God hath so ordered it in the wisdom of his providence, that he will not restrain the lusts of all men's hearts, but suffer some to walk in their own ways. Men in power will command those under them to do what is sinful, fright them by threatenings, force them (if possible) by punishments. Equals and inferiors will set examples of sin, allure, entice, and persuade. But woe be to those by whom such offences come! Men, saith our Savour, should be so afraid to sin, as they should rather part with the dearest things they have in the world, if they be as dear as eyes, hands, feet, rather than sin, or endure them to be occasions of sin to them. See Poole on "Matthew 5:29", where Matthew 18:8,9 are opened. Mark hath the same things, Mark 9:43, only with the addition of this saying thrice, Where their worm dieth not, and the fire is not quenched; which phrase doth but denote the eternity of sinners misery, taken from Isaiah 66:24.