Luke 18:1
And He spake a parable to them, to the end that they ought always to pray, and not to faint;
Colossians 4:2
Persevere in prayer, watching therein with thanksgiving;
Romans 12:12
rejoicing in hope; patient in tribulation; persevering in prayer;
Ephesians 6:18
with all prayer and supplication praying at every opportunity in the Spirit, and watching thereunto in all perseverance and supplication for all the saints;
1 Thessalonians 5:17
pray without ceasing.
Philippians 4:6
Be anxious for nothing; but, in everything by prayer and supplication with thanksgiving, let your requests be made known to God:
Luke 21:36
But watch ye at every season, praying that ye may have full strength to escape all these things that are about to come to pass, and to stand before the Son of Man."
Luke 11:5-9
And He said to them, "Who of you shall have a friend, and shall go to him at midnight, and say to him, 'Friend, lend me three loaves;
2 Corinthians 4:1
Therefore, having this ministry, even as we obtained mercy, we faint not;
Galatians 6:9
And, in doing what is noble, let us not grow weary; for in due season we shall reap, if we faint not.
Colossians 4:12
Epaphras, who is from among you, salutes you, a servant of Christ Jesus, always striving in your behalf in his prayers, that ye may stand perfect and fully assured in all the will of God.
Hebrews 12:3-5
For consider Him Who hath endured such contradiction of sinners against Himself, lest ye become weary, fainting in your souls.