I hold fast

Job 2:3
Then the LORD said to Satan, "Have you considered My servant Job? For there is no one on earth like him--blameless and upright, fearing God and shunning evil. He still retains his integrity, even though you incited Me against him to ruin him without cause."

Psalm 18:20-23
The LORD has rewarded me according to my righteousness; He has repaid me according to the cleanness of my hands. . . .

Proverbs 4:13
Hold on to instruction; do not let go. Guard it, for it is your life.

my heart

Acts 24:16
In this hope, I strive always to maintain a clear conscience before God and man.

2 Corinthians 12:11
I have become a fool, but you drove me to it. In fact, you should have commended me, since I am in no way inferior to those "super-apostles, " even though I am nothing.

1 John 3:20, 21
If our hearts condemn us, God is greater than our hearts, and He knows all things. . . .

so long as I live.