By faith Noah, being warned by God concerning events as yet unseen, in reverent fear constructed an ark for the saving of his household. By this he condemned the world and became an heir of the righteousness that comes by faith. (Hebrews 11:7 ESV)
When God’s patience waited in the days of Noah, while the ark was being prepared, in which a few, that is, eight persons, were brought safely through water. (1 Peter 3:20)
If he [God] did not spare the ancient world, but preserved Noah, a herald of righteousness, with seven others, when he brought a flood upon the world of the ungodly; (2 Peter 2:5)
In the days of Noah, the “wickedness of man was great in the earth, and every intention of the thoughts of his heart was only evil continually.” (Genesis 6:5) In fact, the “earth was corrupt in God’s sight, and the earth was filled with violence.” (Genesis 6:11)
God as humanity’s universal Judge must destroy the people He has created for their immoral behavior. But Noah found favor in the eyes of the LORD, and in preparation for the judgment to come, builds an ark for the saving of his household. For approximately 100 years, Noah likely preached a message of repentance to his peers. Sadly it is likely that they did not heed his message, and so perished in their iniquities.
Just as there was a judgment on the world of the ungodly in Noah’s day so will there be another global judgment on the ungodly when Christ returns with His holy angels. For Jesus said:
For as were the days of Noah, so will be the coming of the Son of Man. For as in those days before the flood they were eating and drinking, marrying and giving in marriage, until the day when Noah entered the ark, 39 and they were unaware until the flood came and swept them all away, so will be the coming of the Son of Man. (Matthew 24:37-39)
The apostle Peter puts the matter this way:
For they deliberately overlook this fact, that the heavens existed long ago, and the earth was formed out of water and through water by the word of God, and that by means of these the world that then existed was deluged with water and perished. But by the same word the heavens and earth that now exist are stored up for fire, being kept until the day of judgment and destruction of the ungodly. (2 Peter 3:5-7)
The world is still as corrupt as it was in the days of Noah. The problem back then as it is now is that sin corrupted human nature and thus left us with an inclination towards evil. We all deserve to be punished just as the people of Noah’s days were punished by a global flood. However, the significant difference between now and then is that now we have an opportunity to let God renew our human nature. This is done by recognizing the things that God calls sin as sin, and trusting in the Lord Jesus Christ’s life, death, and resurrection on our behalf for our salvation, and performing actions in light of His victory.
We know from Noah’s case, that God is certainly capable of protecting those who take refuge in Him. Noah had his ark, but we in the present day have the Lord Jesus Christ.
However just as people who rejected Noah’s ark perished in water, people who reject Christ as Lord and Savior will perish by fire either at their death or at His second coming.
When Christians preach the good news of the gospel to others, it is with this context of judgment, sin, and redemption that we must bear in mind. With regards to sexuality, gender, and marriage, people are masquerading things that God considers sin as being under the protection of civil rights.
The case might be likened to people misdiagnosing a disease that leads to death as being non-existent or non-harmful. The spiritual reality is that the things concerning our sexuality constitute things that warrant God’s judgment should we disregard His standards regarding them. But in light of the judgment that we deserve for slighting our Creator, God still mercifully offers a means of salvation for those who are willing to take Him up on His offer.
If there is a problem that is properly diagnosed, there are also appropriate treatments and solutions that follow. Such is the case for sexual sins. The sooner that people come to realize the reality of their spiritual situation, the sooner they can come to realize that there can be salvation found in the name of Jesus Christ.