"Watch and pray that you may not enter into temptation. The spirit indeed is willing, but the flesh is weak."
(Mark 14:38 -- ESV) 

"But stay awake at all times, praying that you may have strength to escape all these things that are going to take place, and to stand before the Son of Man."
(Luke 21:38 -- ESV) 

Devote yourselves to prayer, being watchful and thankful.
(Colossians 4:2 -- NIV)