19 The verb קָדַם (qadam) means “to come to meet; to come before; to confront” to the face.
20 The verse seems an intrusion (and so E. Dhorme, H. H. Rowley, and many others change the pronouns to make it refer to the animal). But what the text is saying is that it is more dangerous to confront God than to confront this animal.
21 This line also focuses on the sovereign God rather than Leviathan. H. H. Rowley, however, wants to change לִי־חוּא (li-hu’, “it [belongs] to me”) into לֹא הוּא (lo’ hu’, “there is no one”). So it would say that there is no one under the whole heaven who could challenge Leviathan and live, rather than saying it is more dangerous to challenge God to make him repay.
22 Dhorme changes the noun into a verb, “I will tell,” and the last two words into אֵין עֶרֶךְ (’en ’erekh, “there is no comparison”). The result is “I will tell of his incomparable might.”
23 Heb “the face of his garment,” referring to the outer garment or covering. Some take it to be the front as opposed to the back.
24 The word רֶסֶן (resen) has often been rendered “bridle” (cf. ESV), but that leaves a number of unanswered questions. The reads סִרְיוֹן (siryon), with the transposition of letters, but that means “coat of armor.” If the metathesis stands, there is also support from the cognate Akkadian.

In other versions

Who has first given to me, that I should repay him?

Whatever is under the whole heaven is mine.

“I will not keep silence concerning his limbs,

or his mighty strength, or his goodly frame.

Who can strip off his outer garment?

Who would come near him with a bridle?

Who has a claim against me that I must pay?

Everything under heaven belongs to me.

“I will not fail to speak of Leviathan’s limbs,

its strength and its graceful form.

Who can strip off its outer coat?

Who can penetrate its double coat of armor?

Who confronted me, that I should repay him?

Everything under heaven belongs to me.

I cannot be silent about his limbs,

his power, and his graceful proportions.

Who can strip off his outer covering?

Who can penetrate his double layer of armor?

Who has given me anything that I need to pay back?

Everything under heaven is mine.

“I want to emphasize Leviathan’s limbs

and its enormous strength and graceful form.

Who can strip off its hide,

and who can penetrate its double layer of armor?

Who has come to confront me, that I should repay him?

Under all the heavens, it belongs to me.

“I will not keep quiet concerning its limbs

or concerning the extent of its might and the gracefulness of its frame.

Who can strip off its outer covering?

Who can penetrate its double harness?

Who hath prevented me, that I should repay him?

Whatsoever is under the whole heaven is mine.

I will not conceal his parts,

Nor his power, nor his comely proportion.

Who can discover the face of his garment?

Or who can come to him with his double bridle?

Public Domain