125 Heb “Forever, O Lord, your word stands firm in heaven,” or “Forever, O Lord, [is] your word; it stands firm in heaven.” The translation assumes that “your word” refers here to the body of divine instructions contained in the law (note the frequent references to the law in vv. 92–96). See vv. 9, 16–17, 57, 101, 105, 130, 139 and 160–61. The reference in v. 86 to God’s law being faithful favors this interpretation. Another option is that “your word” refers to God’s assuring word of promise, mentioned in vv. 25, 28, 42, 65, 74, 81, 107, 114, 147 and 169. In this case one might translate, “O Lord, your promise is reliable, it stands firm in heaven.”
126 Heb “to a generation and a generation [is] your faithfulness.”

In other versions

Forever, O Lord, your word

is firmly fixed in the heavens.

Your faithfulness endures to all generations;

you have established the earth, and it stands fast.

By your appointment they stand this day,

for all things are your servants.

Your word, Lord, is eternal;

it stands firm in the heavens.

Your faithfulness continues through all generations;

you established the earth, and it endures.

Your laws endure to this day,

for all things serve you.

Lord, your word is forever;

it is firmly fixed in heaven.

Your faithfulness is for all generations;

you established the earth, and it stands firm.

Your judgments stand firm today,

for all things are your servants.

Your eternal word, O Lord,

stands firm in heaven.

Your faithfulness extends to every generation,

as enduring as the earth you created.

Your regulations remain true to this day,

for everything serves your plans.

Forever, O Yahweh,

your word is settled in heaven.

Your faithfulness endures throughout all generations.

You have established the earth and it stands.

By your ordinances they stand today,

for all are your servants.

LAMED.

For ever, O Lord,

Thy word is settled in heaven.

Thy faithfulness is unto all generations:

Thou hast established the earth, and it abideth.

They continue this day according to thine ordinances:

For all are thy servants.

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