Worship the Lord your God, and his blessing will be on your food and water

Exodus 23:20-33
God sent angel with Israeltes. God's name is with him.
Worship the Lord your God, and his blessing will be on your food and water. I will take away sickness from among you, and none will miscarry or be barren in your land, I will give you a full life span.
I will hand over to you the people who live in the land and you will drive them out before you. Do not make covenant with them or with their gods.
God's undertakings for his obedient people.
The Red Sea here is clearly the Gulf of Aqaba. These 'ideal' boundaries - the Gulf of Aqaba to the Mediterranean; Sinai to the Euphrates - were briefly realized under David and Solomon.
Why?
God had told them do not make covenant with them, but Israel forgot and made covenant with Gibeonite(Joshua 9)
Worship the Lord our God, no any good thing lack in our life.
God's blessing will be on my food and water, it is on my daily life.
How?
Worship the Lord my God, his blessing will be with me.