'Essential' in the Bible
And so cause them [by neglect of any essential observance] to bear the iniquity when they eat their holy things; for I the Lord sanctify them.
O Lord God of hosts, who is a mighty one like unto You, O Lord? And Your faithfulness is round about You [an essential part of You at all times].
The reverent fear and worship of the Lord is the beginning of Wisdom and skill [the preceding and the first essential, the prerequisite and the alphabet]; a good understanding, wisdom, and meaning have all those who do [the will of the Lord]. Their praise of Him endures forever.
And the inhabitants of one city shall go to them of another, saying, Let us go speedily to pray and entreat the favor of the Lord and to seek, inquire of, and require [to meet our own most essential need] the Lord of hosts. I will go also.
For it seemed good to the Holy Spirit and to us not to place on you any burden but these essential requirements:
I therefore strongly advise you to take some food. This is essential for your safety. For not a hair will perish from the head of any one of you."
They show that the essential requirements of the Law are written in their hearts and are operating there, with which their consciences (sense of right and wrong) also bear witness; and their [moral] decisions (their arguments of reason, their condemning or approving thoughts) will accuse or perhaps defend and excuse [them]
and know His will and approve the things that are essential, being instructed out of the Law,
an educator of the senseless, a teacher of little children, because you have in the law the essential features of knowledge and of the truth --
On the contrary, those members that seem to be weaker are essential,
For if I [or any others who have taught that the observance of the Law of Moses is not essential to being justified by God should now by word or practice teach or intimate that it is essential to] build up again what I tore down, I prove myself a transgressor.
But to remain in my body is more needful and essential for your sake.
So it is evident that it was essential that He be made like His brethren in every respect, in order that He might become a merciful (sympathetic) and faithful High Priest in the things related to God, to make atonement and propitiation for the people's sins.
For every high priest is appointed to offer up gifts and sacrifices; so it is essential for this [High Priest] to have some offering to make also.
By this we come to know (progressively to recognize, to perceive, to understand) the [essential] love: that He laid down His [own] life for us; and we ought to lay [our] lives down for [those who are our] brothers [ in Him].