'End' in the Bible

at the end of these days has spoken to us in the person of the Son, whom he has established heir of all things, by whom also he made the worlds;

but Christ, as Son over his house, whose house are we, if indeed we hold fast the boldness and the boast of hope firm to the end.

For we are become companions of the Christ if indeed we hold the beginning of the assurance firm to the end;

but bringing forth thorns and briars, it is found worthless and nigh to a curse, whose end is to be burned.

But we desire earnestly that each one of you shew the same diligence to the full assurance of hope unto the end;

without father, without mother, without genealogy; having neither beginning of days nor end of life, but assimilated to the Son of God, abides a priest continually.