Bible

[tenac]

Let what you heard from the beginning abide in you. If what you heard from the beginning abides in you, then you too will abide in the Son and in the Father.
1 John 2:24

I appeal to you therefore, brothers, by the mercies of God, to present your bodies as a living sacrifice, holy and acceptable to God, which is your spiritual worship. Do not be conformed to this world, but be transformed by the renewal of your mind, that by testing you may discern what is the will of God, what is good and acceptable and perfect.
Romans 12:1-2

So we do not lose heart. Though our outer self is wasting away, our inner self is being renewed day by day. For this light momentary affliction is preparing for us an eternal weight of glory beyond all comparison, as we look not to the things that are seen but to the things that are unseen. For the things that are seen are transient, but the things that are unseen are eternal.
2 Corinthians 4:16-18

An intelligent heart acquires knowledge, and the ear of the wise seeks knowledge.
Proverbs 18:15

Therefore, if anyone is in Christ, he is a new creation. The old has passed away; behold, the new has come.
2 Corinthians 5:17