Genesis 30:2

And Jacob's anger was kindled against Rachel,.... Whom yet he dearly loved, hearing her talk in such an extravagant manner, as her words seemed to be, and were not: only expressive of great uneasiness and impatience, but implied what was not in the power of man to do:

and he said, [am] I in God's stead: do you take me to be God, or one that has a dispensing power from him to do what otherwise no creature can do; and which also he never gives to any? for, as the Targum of Jerusalem on Genesis 30:22 says, this is one of the four keys which God delivers not to an angel or a seraph; even the key of barrenness. Children are the gift of God, and his only, and therefore he is to be sought unto for them: hence Onkelos land Jonathan paraphrase it;

"wherefore dost thou seek them of me? shouldest thou not seek them of the Lord?''

who hath withheld from thee the fruit of the womb? children,

Psalms 127:3; not Jacob, but the Lord.