From Bayly.

4. Call to mind the zealous devotions of the Christians in the primitive church, who spent many whole nights and vigils in watching and praying for the forgiveness of their sins, and that they might be found ready at the coming of Christ; and that David was not content to pray at morning, at evening, and at noon (Psal. lv. 16, 17), but he would also rise up at midnight to pray unto God (Psal. cxix. 62.) And if Christ did chide his disciples, because they would not watch with him one hour in praying (Matt. xxvi. 40), what chiding dost thou deserve, who thinkest it too long to continue in prayer but one quarter of an hour? If thou hast spent divers hours at a vain ball or play; yea whole days and nights in carding and dicing, to please thy flesh, be ashamed to think that praying for a quarter of an hour is too long an exercise for the service of God.

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Ps. 55: 16  As for me, I will call upon God; And Jehovah will save me. 17 Evening, and morning, and at noonday, will I complain, and moan;  And he will hear my voice.

Ps. 119:62  At midnight I will rise to give thanks unto thee because of thy righteous ordinances.

Mtt. 26:40  And he cometh unto the disciples, and findeth them sleeping, and saith unto Peter, What, could ye not watch with me one hour?