The children of Israel cried out unto the Lord - Had their prayer been accompanied with faith, we should not have found them in the next verses murmuring against Moses, or rather against the Lord, through whose goodness they were now brought from under that bondage from which they had often cried for deliverance. Calmet thinks that the most pious and judicious cried unto God, while the unthinking and irreligious murmured against Moses.

is not this

Exodus 5:21 And they said to them, The LORD look on you, and judge; because you have made our smell to be abhorred in the eyes of Pharaoh...

Exodus 3:9 Now therefore, behold, the cry of the children of Israel is come to me...

let us alone

Hosea 4:17 Ephraim is joined to idols: let him alone.

Mark 1:24 Saying, Let us alone; what have we to do with you, you Jesus of Nazareth? are you come to destroy us? I know you who you are...

Mark 5:7,17,18 And cried with a loud voice, and said, What have I to do with you, Jesus, you Son of the most high God? I adjure you by God...

for it had

Jonah 4:3,8 Therefore now, O LORD, take, I beseech you, my life from me; for it is better for me to die than to live...

They who have not Been Promoted to that Office. ...
They who have not been promoted [to that office] by the bishop, ought not to adjure, either in churches or in private houses. Notes. Ancient Epitome of Canon XXVI. No one shall adjure without the bishop's promotion to that office. Balsamon. Some were in the habit of "adjuring," that is catechising the unbelievers, who had never received the imposition of the bishop's hands for that purpose; and when they were accused of doing so, contended that as they did not do it in church but only at home, they …
Philip Schaff—The Seven Ecumenical Councils

Of the Necessity of Divine Influences to Produce Regeneration in the Soul.
Titus iii. 5, 6. Titus iii. 5, 6. Not by works of righteousness, which we have done, but according to his mercy he saved us, by the washing of regeneration, and renewing of the Holy Ghost; which he shed on us abundantly, through Jesus Christ our Saviour. IF my business were to explain and illustrate this scripture at large, it would yield an ample field for accurate criticism and useful discourse, and more especially would lead us into a variety of practical remarks, on which it would be pleasant …
Philip Doddridge—Practical Discourses on Regeneration

Exodus
The book of Exodus--so named in the Greek version from the march of Israel out of Egypt--opens upon a scene of oppression very different from the prosperity and triumph in which Genesis had closed. Israel is being cruelly crushed by the new dynasty which has arisen in Egypt (i.) and the story of the book is the story of her redemption. Ultimately it is Israel's God that is her redeemer, but He operates largely by human means; and the first step is the preparation of a deliverer, Moses, whose parentage, …
John Edgar McFadyen—Introduction to the Old Testament