Let him come play. We will guard him.
A promise of care hiding a plan
The brothers asked to take Yusuf out the next day so he could enjoy himself and play, promising to protect him and keep him safe. The guardians were the danger.
A promise to look after something can be used to get access to it. The friend who offers to hold your money. The adult who offers to babysit too eagerly. Care is shown over time, not just declared.
Promises of protection are a good sign.
A promise to guard is only as good as the heart behind it.
Think of something you promised to look after. Check on it today, properly.