O Lord, Almighty God of our fathers, Abraham, Isaac, and Jacob, and of their righteous seed;

who hast made Heaven and Earth, with all the ornament therefore;

who has bound the sea by the word of thy commandment;

who has shut up the deep, and sealed it by thy terrible and glorious name;

whom all men fear, and tremble before thy power;

for the majesty of thy glory cannot be borne, and thine angry threatening towards sinners is importable;

but they merciful promise is unmeasurable and unsearchable;

for thou art the most high Lord, of great compassion, longsuffering, very merciful,

and repentest of the evils of men.

Thou, O Lord, according to thy great goodness has promised repentance and forgiveness to them that have sinned against thee: and of thine infinite mercies hast appointed repentance unto sinners, that they may be saved.

Thou therefore, O Lord, that are the God of the just, has not appointed repentance to the just, as to Abraham, and Isaac, and Jacob, which have not sinned against thee;

but thou has appointed repentance unto me that am a sinner:

for I have sinned above the number of the sands of the sea.

My transgressions, O Lord, are multiplied: my transgressions are multiplied, and I am not worthy to behold and see the height of Heaven for the multitude of mine iniquities.

I am bowed down with many iron bands, that I cannot lift up mine head, neither have any release;

for I have provoked thy wrath, and done evil before thee:

I did not thy will, neither kept I thy Commandments:

I have set up abominations, and I have multiplied offences.

Now therefore I bow the knee of mine heart,* beseeching thee of grace.

I have sinned, O Lord, I have sinned, and I acknowledge mine iniquities:

wherefore, I humbly beseech thee, forgive me, O Lord, forgive me, and destroy me not with mine iniquities.

Be not angry with me for ever, by reserving evil for me: neither condemn me to the lower parts of the earth.

For thou art the God, even the God of them that repent: and in me thou wilt shew all thy goodness:

for thou wilt save me, that am unworthy, according to thy great mercy.

Therefore I will praise thee for ever all the days of my life:

for all the powers of the heavens do praise thee, and thine is the glory for ever and ever.

Amen.

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* My emphasis: This is the only bowing that matters to God.

https://www.kingjamesbibleonline.org/Prayer-of-Manasseh-Chapter-1/

(Referenced in 2 Chronicles 33:11-13.)

For further background and context, see here or do an online or a library search.