Sometime after the creation of Adam and Eve on the sixth day of creation, see Genesis 1:26-31, they rebelled against God by eating the fruit of the tree of the knowledge of good and evil.
“So when the woman saw that the tree was good for food, that it was pleasant to the eyes, and a tree desirable to make one wise, she took of its fruit and ate. She also gave to her husband with her, and he ate.” Genesis 3:6.
“Finally, brethren, pray for us, that the word of the Lord may have free course and be glorified, just as it is with you, and that we may be delivered from unreasonable and wicked men; for not all have faith.” 2 Thessalonians 3:1-2.
The above was covered in the study, Not All Have Faith, 2 Thessalonians 3:1-2, posted on 3-14-21. It is included to maintain context, we will continue here with 2 Thessalonians 3:3 below.
“But the Lord is faithful, who will establish you and guard you from the evil one.” 2 Thessalonians 3:3.
“And we urge you, brethren, to recognize those who labor among you, and are over you in the Lord and admonish you, and to esteem them very highly in love for their work’s sake.” 1 Thessalonians 5:12-13a.
“But now that Timothy has come to us from you, and brought us good news of your faith and love, and that you always have good remembrance of us, greatly desiring to see us, as we also to see you – therefore, brethren, in all our affliction and distress we were comforted concerning you by your faith. For now we live, if you stand fast in the Lord.” 1 Thessalonians 3:6-8.
“Come now, you who say, ‘Today or tomorrow we will go to such and such a city, spend a year there, buy and sell, and make a profit’; whereas you do not know what will happen tomorrow. For what is your life? It is even a vapor that appears for a little time and then vanishes away.” James 4:13-14.