Perseverance in hardship is one of the most consistent themes in Scripture — because spiritual growth is often forged in difficulty.
James 1:2–4 "My brethren, count it all joy when ye fall into divers temptations; Knowing this, that the trying of your faith worketh patience. But let patience have her perfect work, that ye may be perfect and entire, wanting nothing."
Romans 5:3–4 "And not only so, but we glory in tribulations also: knowing that tribulation worketh patience; and patience, experience; and experience, hope."
Hebrews 12:1 "Wherefore seeing we also are compassed about with so great a cloud of witnesses, let us lay aside every weight, and the sin which doth so easily beset us, and let us run with patience the race that is set before us."
Galatians 6:9 "And let us not be weary in well doing: for in due season we shall reap, if we faint not."
1 Peter 5:10 "But the God of all grace, who hath called us unto his eternal glory by Christ Jesus, after that ye have suffered a while, make you perfect, stablish, strengthen, settle you."