Why is Elijah sent to this widow? She was not among the people of Israel and she herself testifies of her sins. Clearly, she doesn’t choose God but He chooses her (John 15:16). He saves her just as He has and will redeem all those He has predestined for adoption as children through Jesus Christ; this is according to the purpose of His will, to the praise of His own glorious grace (Ephesians 1:5-11)! Salvation is of the LORD.