Qualm means misgiving, doubt, reservation, uneasiness, insecurity, apprehension, hesitation, indecision. So 'Qualm-less' (if it was a word) would mean confidence, surety, security, decisiveness, boldness.

We Are God's Masterpiece, Handiwork; Poetry.

"Do not be anxious about anything, but in every situation, by prayer and petition, with thanksgiving, present your requests to God. 7 And the peace of God, which transcends all understanding, will guard your hearts and your minds in Christ Jesus."

PHILIPPIANS 4:6-7

Proverbs 19:11

"A man's wisdom gives him patience. It is to his glory to overlook an offense."

Shadrach, Meshach and Abendego were young men that didn't need to defend themselves. They trusted in their God!