Note 9 at Joh 5:15: Why did the Lord only heal one man at the pool of Bethesda when a multitude of sick people was there (Joh 5:3)? These scriptures don't reveal that, so we cannot definitely say what the entire reason was. We can say that it was not because He wills some people to be sick (see note 1 at Mt 8:16 and note 2 at Mt 8:17).

Certainly one factor in His decision must have been this response in faith, as explained in note 4 at Joh 5:8. The confusion that would have followed after this man's healing was broadcast would not have resulted in a God-kind of faith but rather, the same carnal response of mass hysteria that Satan uses (Ac 19:29, 32, and 34). Without faith, it is impossible to please God (Heb 11:6). In God's kingdom the end does not justify the means.