Matthew 20:31
And the multitude checked them, that they should be silent; but they cried out the more, Have mercy on us, Lord, son of David.
Matthew 19:13
Then were brought to him little children, that he should lay his hands upon them, and pray [for them]: but the disciples rebuked them.
Matthew 7:7-8
Ask, and it shall be given you; seek, and ye shall find; knock, and it shall be opened unto you:
Matthew 15:23
But he replied not a word to her. Then his disciples came and intreated him, saying, Send her away; for she is crying aloud after us.
Luke 11:8-10
I tell you, though even he would not rise and give him because he is his friend; yet because of his importunity, roused up, he will give him as many as he needeth.
Luke 18:1-8
THEN he spake also to them a parable, to shew that we ought to pray always, and not faint;
Luke 18:39
And they who were going before rebuked him, that he should hold his peace: but he cried so much the more, Son of David, have mercy on me!
Colossians 4:2
Persevere in prayer, watching therein with thanksgiving;
1 Thessalonians 5:17
Pray without ceasing.