2 Timothy 3:16–17
16 All Scripture is inspired by God and is useful to teach us what is true and to make us realize what is wrong in our lives. It corrects us when we are wrong and teaches us to do what is right. 17 God uses it to prepare and equip his people to do every good work.

Galatians 4:8–12a
8 Before you Gentiles knew God, you were slaves to so-called gods that do not even exist. 9 So now that you know God (or should I say, now that God knows you), why do you want to go back again and become slaves once more to the weak and useless spiritual principles of this world? 10 You are trying to earn favor with God by observing certain days or months or seasons or years. 11 I fear for you. Perhaps all my hard work with you was for nothing. 12 Dear brothers and sisters, I plead with you to live as I do in freedom from these things, for I have become like you Gentiles—free from those laws.
You did not mistreat me when I first preached to you.

Galatians 4:1–7
Think of it this way. If a father dies and leaves an inheritance for his young children, those children are not much better off than slaves until they grow up, even though they actually own everything their father had. 2 They have to obey their guardians until they reach whatever age their father set. 3 And that’s the way it was with us before Christ came. We were like children; we were slaves to the basic spiritual principles of this world.
4 But when the right time came, God sent his Son, born of a woman, subject to the law. 5 God sent him to buy freedom for us who were slaves to the law, so that he could adopt us as his very own children. 6 And because we are his children, God has sent the Spirit of his Son into our hearts, prompting us to call out, “Abba, Father.” 7 Now you are no longer a slave but God’s own child. And since you are his child, God has made you his heir.

1 Corinthians 3:10–11
10 Because of God’s grace to me, I have laid the foundation like an expert builder. Now others are building on it. But whoever is building on this foundation must be very careful. 11 For no one can lay any foundation other than the one we already have—Jesus Christ.

Ephesians 2:8–9
8 God saved you by his grace when you believed. And you can’t take credit for this; it is a gift from God. 9 Salvation is not a reward for the good things we have done, so none of us can boast about it.

Hebrews 2:1
So we must listen very carefully to the truth we have heard, or we may drift away from it.

Isaiah 40:6–8
A voice said, “Shout!”
I asked, “What should I shout?”
“Shout that people are like the grass. Their beauty fades as quickly as the flowers in a field.
7 The grass withers and the flowers fade beneath the breath of the Lord. And so it is with people.
8 The grass withers and the flowers fade, but the word of our God stands forever.”