God: "... you will certainly die." (Genesis 2:17b)
The devil: "You certainly won't die!" (Genesis 3:4)
God: "The person who has God's approval will live by faith. But if he turns back, I will not be pleased with him." (Hebrews 10:38)
"For God so loved the world, that He gave His only begotten Son, that whosoever believeth in Him should not perish, but have everlasting life." (John 3:16)
"Write a Letter, Win a House: 'Homeowner selling $1.7M mansion for $25 and 'compelling' essay'." (An ad on social media)
Let's compare those two:
1. Those two above are announcement headlines
2. They are offers to the public
3. Both offer irresistible prizes
4. The prizes, an 'everlasting life' and a '$1.7M mansion', are up for grabs
Like giveaways and promotions in general, offers also have their own details or as known as terms and conditions.
Terms and conditions are normally attached to a prize and mostly are non-negotiable.
Anyone who accepts the offer consequently declares to enter into a formal and legally binding contract with its terms and conditions.