Corresponding Greek / Hebrew Entries: The concept of completeness or perfection in the Hebrew Bible is often expressed by the root תָּמִים (tamim), which is associated with being whole, complete, or blameless. Some corresponding Strong's Hebrew entries include:
• H8549 תָּמִים (tamim): complete, whole, entire, sound
• H8003 שָׁלֵם (shalem): complete, safe, at peace

These Hebrew terms, like τελείως, convey the idea of completeness and perfection, often in the context of moral and spiritual integrity.

Usage: The term τελείως is used in the New Testament to describe actions or states that are complete or perfect in nature. It emphasizes the totality or fullness of an action or condition.

Context: The Greek adverb τελείως appears in the New Testament to express the idea of completeness or perfection. It is closely related to the concept of maturity and fulfillment of purpose. In the context of Christian theology, τελείως often pertains to the spiritual maturity and completeness that believers are called to achieve in their faith journey.

In 1 Peter 1:13, the Berean Standard Bible translates the verse as: "Therefore prepare your minds for action. Be sober-minded. Set your hope fully on the grace to be given you at the revelation of Jesus Christ." Here, the word "fully" is translated from τελείως, indicating the complete and undivided hope that believers should place in the grace of God.

The use of τελείως underscores the biblical call for believers to pursue a life that reflects the fullness of God's purpose and the perfection of His will. It is a reminder of the transformative power of faith that leads to spiritual maturity and completeness in Christ.