1 Corinthians 6:9

ἢ οὐκ οἴδατε. The Apostle in this verse sums up what he has been saying in this chapter and the last. First generally, the unjust, wrong-doers, shall not inherit the kingdom of God, that is, His final kingdom in the ‘restitution of all things,’ for which we daily pray. He then proceeds to particulars, and declares that all who lived for themselves, whether set upon sensual indulgence or upon gain, would deprive themselves of the inheritance obtained through faith in Christ.

μὴ πλανᾶσθε. Some, says Chrysostom, might say ‘God is good and kindly, He will not go to extremities over our transgressions. Let us not fear.’ Into such self-deception as this men might easily fall in a corrupt Society like that of Corinth.

μαλακοί, effeminate, i.e. self-indulgent. See Arist. Nic. Eth. VII. 7, ὁ δὲ περὶ λύπας μαλακός, ὁ δὲ καρτερικός, and again, ἡ τρυφὴ μαλακία τίς ἐστιν.