'Once' in the Bible

Once you were not a people [at all], but now you are God’s people; once you had not received mercy, but now you have received mercy.

For indeed Christ died for sins once for all, the Just and Righteous for the unjust and unrighteous [the Innocent for the guilty] so that He might bring us to God, having been put to death in the flesh, but made alive in the Spirit;

casting all your cares [all your anxieties, all your worries, and all your concerns, once and for all] on Him, for He cares about you [with deepest affection, and watches over you very carefully].