By faith Noah, being warned [of God] concerning things not seen as yet, moved with godly fear, prepared an ark to the saving of his house; through which he condemned the world, and became heir of the righteousness which is according to faith.
Hebrews 11:5 By faith Enoch was translated that he should not see death; and he was not found, because God translated him: for he hath had witness borne to him that before his translation he had been well-pleasing unto God:
Hebrews 11:6 And without faith it is impossible to be well-pleasing [unto him]; for he that cometh to God must believe that he is, and [that] he is a rewarder of them that seek after him.
Hebrews 11:7 By faith Noah, being warned [of God] concerning things not seen as yet, moved with godly fear, prepared an ark to the saving of his house; through which he condemned the world, and became heir of the righteousness which is according to faith.
Hebrews 11:8 By faith Abraham, when he was called, obeyed to go out unto a place which he was to receive for an inheritance; and he went out, not knowing whither he went.
Hebrews 11:9 By faith he became a sojourner in the land of promise, as in a [land] not his own, dwelling in tents, with Isaac and Jacob, the heirs with him of the same promise:
The verse centers on "world", "condemn", "faith", "noah", "warned", "concerning", "things", and "seen". It is saying that the verse draws attention to "world" and "condemn", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 6's "And without faith it is impossible to..." into verse 8's "By faith Abraham when he was called...", so "world" and "condemn" belong inside that flow. In Hebrews context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "world" and "condemn" with trust shaped by these words, not by a vague optimism outside the passage.