Genesis 18:27
Then Abraham answered, "Now that I have ventured to speak to the Lord--though I am but dust and ashes--

Matthew 7:7, 11
Ask and it will be given to you; seek and you will find; knock and the door will be opened to you. . . .

Luke 11:8
I tell you, even though he will not get up to provide for him because of his friendship, yet because of the man's persistence, he will get up and give him as much as he needs.

Luke 18:1
Then Jesus told them a parable about their need to pray at all times and not lose heart:

Ephesians 6:18
Pray in the Spirit at all times, with every kind of prayer and petition. To this end, stay alert with all perseverance in your prayers for all the saints.

Hebrews 4:16
Let us then approach the throne of grace with confidence, so that we may receive mercy and find grace to help us in our time of need.

Hebrews 10:20-22
by the new and living way opened for us through the curtain of His body, . . .