Exodus 16:13–15 (ESV): "13 In the evening quail came up and covered the camp, and in the morning dew lay around the camp. 14 And when the dew had gone up, there was on the face of the wilderness a fine, flake-like thing, fine as frost on the ground. 15 When the people of Israel saw it, they said to one another, "What is it?" For they did not know what it was. And Moses said to them, "It is the bread that the Lord has given you to eat."
God owes us nothing and yet He gives us everything. He gives us far more than we ever deserve. Rather than grumbling about what you don't have try praising Him for what you do. He is Jehovah-Jireh, the Lord will provide!
As the Israelites move out of Elim to the wilderness of Sin they find themselves once again questioning God Almighty. They directed their complaints at Moses and Aaron but they were really meant for God. How could God bring them up out of Egypt and now leave them to die of starvation. They were anticipating starvation rather than remaining hopeful and trusting the Lord. God, seeing their fickle hearts waning, provides quail and manna for them. It's a picture of Jesus, He is our quail and the true Bread from Heaven. He is the One who sustains us through the wilderness of Sin even now.
Don't anticipate the worst Christian. Hope for the best and trust the Lord that He will provide our every need. Don't turn to grumbling and complaining as your means of provision. Petition God and trust that He will provide as He has promised to. He has not brought you out of darkness so you can fail in light. He will meet your daily needs according to His will, you can count on that.
Father we thank You that You are forever faithful to us. When we are in the wilderness of sin You provide a rescue through the Bread of Heaven Jesus Christ. Let us not anticipate the worst but hope for the best. You are more than enough for us. Take our hearts and mold us into steadfast, trusting Christians that are a reflection of Your marvelous glory we pray in Jesus name, amen!