Num 21:7  Therefore the people came to Moses, and said, We have sinned, for we have spoken against the LORD, and against thee; pray unto the LORD, that he take away the serpents from us. And Moses prayed for the people.

Jdg 10:10  And the children of Israel cried unto the LORD, saying, We have sinned against thee, both because we have forsaken our God, and also served Baalim.

1Sa 7:6  And they gathered together to Mizpeh, and drew water, and poured it out before the LORD, and fasted on that day, and said there, We have sinned against the LORD. And Samuel judged the children of Israel in Mizpeh.

Ezr 9:6  And said, O my God, I am ashamed and blush to lift up my face to thee, my God: for our iniquities are increased over our head, and our trespass is grown up unto the heavens.

Neh 1:6  Let thine ear now be attentive, and thine eyes open, that thou mayest hear the prayer of thy servant, which I pray before thee now, day and night, for the children of Israel thy servants, and confess the sins of the children of Israel, which we have sinned against thee: both I and my father's house have sinned.

Isa 59:12  For our transgressions are multiplied before thee, and our sins testify against us: for our transgressions are with us; and as for our iniquities, we know them;

Jer 8:14  Why do we sit still? assemble yourselves, and let us enter into the defenced cities, and let us be silent there: for the LORD our God hath put us to silence, and given us water of gall to drink, because we have sinned against the LORD.

Jer 14:7  O LORD, though our iniquities testify against us, do thou it for thy name's sake: for our backslidings are many; we have sinned against thee.

Dan 9:5  We have sinned, and have committed iniquity, and have done wickedly, and have rebelled, even by departing from thy precepts and from thy judgment

FROM THE PASTORS:  In each of these scriptures, all of Israel had sinned and fallen short. II Chronicles 7:14, God has given us a great promise. It's up to us to come to God in prayer, and it wouldn't hurt us to fast one or two meals. It does help!