Hebrews 12:12-17

So then, strengthen hands that are weak and knees that tremble. [Is 35:3] Cut through and make smooth, straight paths for your feet [that are safe and go in the right direction], so that the leg which is lame may not be put out of joint, but rather may be healed. Continually pursue peace with everyone, and the sanctification without which no one will [ever] see the Lord. See to it that no one falls short of God’s grace; that no root of resentment springs up and causes trouble, and by it many be defiled; and [see to it] that no one is immoral or godless like Esau, who sold his own birthright for a single meal. [Gen 25:29-34] For you know that later on, when he wanted [to regain title to] his inheritance of the blessing, he was rejected, for he found no opportunity for repentance [there was no way to repair what he had done, no chance to recall the choice he had made], even though he sought for it with [bitter] tears. [Gen 27:30-40]