Promise 26 from Exodus 8:12-13

Ex. 8:12-13 - "Then Moses and Aaron went out from Pharaoh, and Moses cried to the Lord concerning the frogs which He had inflicted upon Pharaoh. the Lord did according to the words of Moses, and the frogs died out of the houses, the courts, and the fields." - It strikes me funny that Moses cried out to God, as through he was begging God to show up and do as Moses told Pharaoh would happen. Why did he approach God with such insecurity? He knows God is in control, well.... at least he should have known. Was he afraid that it might make him and Aaron look bad if the frogs didn't die when he told Pharaoh they would? Were they concerned that the Pharaoh and/or the Israelites would kill them if the frogs didn't die? God is faithful to His people, He did just as Moses asked. I can't fault Moses and Aaron too much, because I do the same. I don't use the authority God gives me to make decisions with confidence, then when I do declare something prophetically, I find myself going to God and pleading that He'll make sure it happens. What Moses missed and what I often miss is that the words uttered "Tomorrow, may it be according to your word... the frogs will depart from you." vss. 10-11 are not really from us, it is the work of God through us. We can have the confidence to declare in faith what God puts on our hearts, because He is faithful!