Bible Verses About Access to God in Prayer

For what nation is there so great, who hath God so nigh unto them, as the LORD our God is in all things that we call upon him for?

But thou, when thou prayest, enter into thy closet, and when thou hast shut thy door, pray to thy Father which is in secret; and thy Father which seeth in secret shall reward thee openly.

And if ye call on the Father, who without respect of persons judgeth according to every man's work, pass the time of your sojourning here in fear: