Matthew 7:7-8
Ask, and it shall be given you; seek, and ye shall find; knock, and it shall be opened unto you:
Philippians 4:6
Be not anxious about any thing, but in every case by prayer and supplication, with thanksgiving, let your petitions be made known unto God.
Hebrews 4:16
Let us therefore approach with boldness the throne of grace, that we may receive mercy, and find grace for seasonable help.
Hebrews 10:21-22
and having a great priest over the house of God,
James 4:2-3
Ye eagerly covet, yet have not: ye murder, and are envious, yet cannot obtain [your object]; ye wage war, but have not, because ye pray not.
1 John 5:14
And this is the confidence that we have towards him, that whatsoever we ask according to his will, he heareth us.