Romans 4:20
Nor did he with regard to the promise of God waver in unbelief, but he waxed strong in faith, while he gave God glory,
2 Corinthians 12:10
Most gladly therefore will I boast rather of my weakness, that over me like a tent may be pitched the power of Christ. That is why I rejoice in weakness, in ill-treatment, in troubles, in persecutions and calamities for Christ's sake. For when I am weak, then am I strong.
Matthew 9:8
But all the crowd were awestruck, and glorified God, who had given such power to men.
Luke 1:18
"How shall I be sure of this?" said Zachariah to the Angel. "For I am an old man and my wife is advanced in years."
Luke 1:45
"And blessed is she who believed that the Lord's words spoken to her would be fulfilled."
1 Corinthians 16:13
Be watchful, stand firm in the faith, be manly, be strong.
Ephesians 6:10
Finally, my brothers, let your hearts be strengthened in the Lord, and in the power of his might.
2 Timothy 2:1
Do you then, my son, strengthen you heart in the grace which is in Christ Jesus.