'Promises' in the Bible

“For Sheol cannot praise or thank You,Death cannot praise You and rejoice in You;Those who go down to the pit cannot hope for Your faithfulness.

Then said Hezekiah to Isaiah, “The word of the Lord which you have spoken is good.” For he thought, “There will be peace and faithfulness [to God’s promises to us] in my days.”

On your walls, O Jerusalem, I have appointed and stationed watchmen (prophets),Who will never keep silent day or night;You who profess the Lord, take no rest for yourselves,

“Because he who blesses himself on the earthWill bless himself by the God of truth and faithfulness;And he who swears [an oath] on the earthWill swear by the God of truth and faithfulness;Because the former troubles are forgotten,And because they are hidden from My sight.