'Remain' in the Bible

if indeed you remain grounded and steadfast in the faith and are not shifted away from the hope of the gospel that you heard. This gospel has been proclaimed in all creation under heaven, and I, Paul, have become a servant of it.

Let the teaching concerning Christ remain as a rich treasure in your hearts. In all wisdom teach and admonish one another with psalms, hymns, and spiritual songs, and sing with grace in your hearts to God.

This greeting is written with my own signature "Paul." Remember that I remain imprisoned. May grace be with you! Amen.