'Keep' in the Bible

For as these qualities are yours and are increasing [in you as you grow toward spiritual maturity], they will keep you from being useless and unproductive in regard to the true knowledge and greater understanding of our Lord Jesus Christ.

then [in light of the fact that all this is true, be sure that] the Lord knows how to rescue the godly from trial, and how to keep the unrighteous under punishment until the day of judgment,