Reject Good Conscience, Suffer A Shipwreck

 Above all else, guard your heart, for everything you do flows from it.
Pr 4:23

And why is everything you do so important?

...everything that does not come from faith is sin.
Rom 14:23


And without faith it is impossible to please God, because anyone who comes to him must believe that he exists and that he rewards those who earnestly seek him.
Heb 11:6

To the person who pleases him, God gives wisdom, knowledge and happiness, but to the sinner he gives the task of gathering and storing up wealth to hand it over to the one who pleases God. This too is meaningless, a chasing after the wind.
Eccl 2:26

OK, so it's good to please God. Where do I start if everything is meaningless?'

For I know the plans I have for you,” declares the Lord, “plans to prosper you and not to harm you, plans to give you hope and a future. ¹² Then you will call on me and come and pray to me, and I will listen to you. ¹³ You will seek me and find me when you seek me with all your heart.
Jer 29:11-13 

How do I seek God with all my heart?

They show that the requirements of the law are written on their hearts, their consciences also bearing witness, and their thoughts sometimes accusing them and at other times even defending them.
Rom 2:15

Wow, this is almost the Wikipedia definition of conscience! and the conection between heart and conscience?

The goal of this command is love, which comes from a pure heart and a good conscience and a sincere faith.
1 Tim 1:5

Timothy, my son, I am giving you this command in keeping with the prophecies once made about you, so that by recalling them you may fight the battle well, ¹⁹ holding on to faith and a good conscience, which some have rejected and so have suffered shipwreck with regard to the faith.
1 Tim 1:18-19

Btw, the command here is to stop people in the church from teaching false doctrine.(1 Tim 1:3-4)

Guard your heart, your actions come from it. 
If your actions don't come from faith, you're missing the point of God's grace.
But you need faith to please God,
and then he gives you cool stuff like wisdom and stuff.
So there's a reward for God-seekers, but it takes your whole heart.
That's when you need to listen to your conscience.
You know your conscience is a valid guide if it produces love in you. 
But you need to fight to keep your heart pure, conscience food and faith strong, because life can get difficult.

So - guard your heart - find God.
Reject good conscience and suffer a spiritual shipwreck.

Shipwrecks are not fun. In fact, people would rather throw a prophet overboard than suffer a shipwreck. Not fun. Ask Jonah (Jonah 1:1-17)

• Do your actions come from faith that God rewards you for seeking Him?
• Does your conscience lead you to understand and love people more deeply?
• What does your conscience lead you to?
• What - or whom - would you throw overboard to avoid a spiritual shipwreck?