Lamentations 3:25–26

In the midst of lament, it is said to be good to wait quietly for YHWH's salvation

²⁵Good is YHWH to those who wait for him, to the soul that seeks him.
²⁶Good it is that one should await, and silently, the salvation of YHWH.

In its context

²³They are new every morning; great is your faithfulness.

²⁴My portion is YHWH, says my soul; therefore I will await him.

…

²⁷Good it is for the man that he bear a yoke in his youth.

²⁸Let him sit alone and be silent, because he has laid it on him.

טוֹבtov· good
Good in the widest sense: pleasant, beautiful, useful, right, of good quality. As a noun, "good", "good things", "well-being".
יְהוָהyehva· YHWH
The personal name of the God of Israel, written in Hebrew with four letters, Y-H-W-H, without vowels. Out of reverence Jews stopped pronouncing it and read "Adonai" (Lord), so many Bibles put "the LORD" or "Jehovah". This translation keeps the four letters. The name is related to the verb "to be" (Exodus 3:14-15). He is not a god other than Elohim: "YHWH Elohim" is the same Creator God, called by his name.
קוָֹkvoa· gather; wait for
Gather together, collect in one place (said of the waters). In other passages the same verb means "wait for" with hope.
נֶפֶשׁnefesh· soul, living being, life
A breathing being, a living being. It is translated "living being" (people and animals), "life" (when living or dying is at stake), "person" (in counts and laws), "soul" (the person at the innermost: desires, joy, anguish) or "myself". In the Old Testament it names the whole living being, not only a part of it.
תִּדְרְשֶׁtidrshe· seek, inquire
Seek earnestly; inquire; require an account. Turned toward God, consult him or seek him.
יָחִילyachil· waiting patiently
Waiting with patience and expectation.
דוּמָםdumam· silently, in silence
Silently, quietly, in stillness.
תְשׁוּעַתteshuat· deliverance, victory
Deliverance, rescue from a danger; in war, victory.