'Devoted' in the Bible

“Please, O Lord, remember now [with compassion] how I have walked before You in faithfulness and truth and with a whole heart [entirely devoted to You], and have done what is good in Your sight.” And Hezekiah wept bitterly.

And he got rid of the horses that the kings of Judah had given [in worship] to the sun at the entrance of the house of the Lord, by the chamber of Nathan-melech the official, which was in the annex; and he burned the chariots of the sun.