Romans 8:29
For [that class of] persons whom God knew beforehand He also predetermined to become conformed to the [spiritual] likeness of His Son, so that He could be the firstborn One among [His] many brothers [i.e., so He could be the preeminent example to all His followers. See Heb. 2:11].
Philippians 4:8
Finally, brothers, give [careful] thought to these things: Whatever is true, whatever is noble, whatever is right, whatever is pure, whatever is lovable, whatever is commendable. If it is excellent; if it is praiseworthy; [think about it].
Hebrews 12:16-17
and that no one becomes immoral or ungodly, like Esau, who sold his right to the firstborn son's inheritance for a single meal.