I'm not afraid of anything in this world
Yes, even if I walk through the valley of the shadow of death, I will not be afraid of anything, because You are with me.
Psalm 23:4 NLV

The Lord is my light and my salvation—whom shall I fear? The Lord is the stronghold of my life—of whom shall I be afraid? Psalm 27:1 NIV

Light, space, zest—that’s God! So, with him on my side I’m fearless, afraid of no one and nothing. Psalm 27:1 MSG

Jesus: "I tell you, as friends of mine, that you need not be afraid of those who can kill the body, but afterwards cannot do anything more." Luke 12:4-9 PHILLIPS

Jesus: "Do not be afraid of those who kill the body but cannot kill the soul." Matthew 10:28 NIV
And if your way should falter
Along the stony pass
Jesus: "But he who received the seed on stony places, this is he who hears the word and immediately receives it with joy; yet he has no root in himself, but endures only for a while. For when tribulation or persecution arises because of the word, immediately he stumbles." Matthew 13:20-21 NKJV
 
The Lord makes firm the steps of the one who delights in him; though he may stumble, he will not fall, for the Lord upholds him with his hand. Psalm 37:23-24 NIV
​And if the night runs over
And if the day won't last
And if your way should falter
Along the stony pass
It's just a moment
This time will pass
​For his anger lasts only a moment, but his favor lasts a lifetime; weeping may stay for the night, but rejoicing comes in the morning. Psalm 30:5 NIV