'Necessity' in the Bible

and My people, who are called by My Name, humble themselves, and pray and seek (crave, require as a necessity) My face and turn from their wicked ways, then I will hear [them] from heaven, and forgive their sin and heal their land.

And he commanded Judah to seek the Lord God of their fathers [to inquire of and for Him and seek Him as a vital necessity], and to observe the law [given to Moses] and the commandment.

and he went out to meet Asa and said to him, “Hear me, Asa, and all Judah and Benjamin: the Lord is with you while you are with Him. If you seek Him [inquiring for and of Him, as your soul’s first necessity], He will let you find Him; but if you abandon (turn away from) Him, He will abandon (turn away from) you.