Hebrews 12:3 NIV

1 Corinthians 15:58 NIV
Therefore, my dear brothers and sisters, stand firm. Let nothing move you. Always give yourselves fully to the work of the Lord, because you know that your labor in the Lord is not in vain.

2 Corinthians 4:16 NIV
Therefore we do not lose heart. Though outwardly we are wasting away, yet inwardly we are being renewed day by day.

Galatians 6:9 NIV
Let us not become weary in doing good, for at the proper time we will reap a harvest if we do not give up.

Revelation 2:3 NIV
You have persevered and have endured hardships for my name, and have not grown weary.