'Concern' in the Bible

The one who loves his life [eventually] loses it [through death], but the one who hates his life in this world [and is concerned with pleasing God] will keep it for life eternal.

Jesus said to him, “If I want him to stay alive until I come [again], what is that to you? You follow Me!”

Slaves, be obedient to those who are your earthly masters, with respect for authority, and with a sincere heart [seeking to please them], as [service] to Christ—

[For my hope is] that their hearts may be encouraged as they are knit together in [unselfish] love, so that they may have all the riches that come from the full assurance of understanding [the joy of salvation], resulting in a true [and more intimate] knowledge of the mystery of God, that is, Christ,

Beloved, while I was making every effort to write you about our common salvation, I was compelled to write to you [urgently] appealing that you fight strenuously for [the defense of] the faith which was once for all handed down to the saints [the faith that is the sum of Christian belief that was given verbally to believers].