Genesis 18:31

And he said, “Now behold, I have decided to speak to the Lord [again]. Suppose [only] twenty [righteous people] are found there?” And the Lord said, “I will not destroy it for the sake of the twenty.”

Genesis 18:27

Abraham answered, “Now behold, I who am but dust [in origin] and ashes have decided to speak to the Lord.

Matthew 7:7

Ask and keep on asking and it will be given to you; seek and keep on seeking and you will find; knock and keep on knocking and the door will be opened to you.

Matthew 7:11

If you then, evil (sinful by nature) as you are, know how to give good and advantageous gifts to your children, how much more will your Father who is in heaven [perfect as He is] give what is good and advantageous to those who keep on asking Him.

Luke 11:8

I tell you, even though he will not get up and give him anything just because he is his friend, yet because of his persistence and boldness he will get up and give him whatever he needs.

Luke 18:1

Now Jesus was telling the disciples a parable to make the point that at all times they ought to pray and not give up and lose heart,

Ephesians 6:18

With all prayer and petition pray [with specific requests] at all times [on every occasion and in every season] in the Spirit, and with this in view, stay alert with all perseverance and petition [interceding in prayer] for all God’s people.

Hebrews 4:16

Therefore let us [with privilege] approach the throne of grace [that is, the throne of God’s gracious favor] with confidence and without fear, so that we may receive mercy [for our failures] and find [His amazing] grace to help in time of need [an appropriate blessing, coming just at the right moment].

Hebrews 10:20-22

by this new and living way which He initiated and opened for us through the veil [as in the Holy of Holies], that is, through His flesh,

Treasury of Scripture Knowledge

Summary

And he said, Behold now, I have taken upon me to speak unto the Lord: Peradventure there shall be twenty found there. And he said, I will not destroy it for twenty's sake.

Bible References

General references

Genesis 18:27
Abraham answered, “Now behold, I who am but dust [in origin] and ashes have decided to speak to the Lord.
Matthew 7:7
Ask and keep on asking and it will be given to you; seek and keep on seeking and you will find; knock and keep on knocking and the door will be opened to you.
Luke 11:8
I tell you, even though he will not get up and give him anything just because he is his friend, yet because of his persistence and boldness he will get up and give him whatever he needs.
Luke 18:1
Now Jesus was telling the disciples a parable to make the point that at all times they ought to pray and not give up and lose heart,
Ephesians 6:18
With all prayer and petition pray [with specific requests] at all times [on every occasion and in every season] in the Spirit, and with this in view, stay alert with all perseverance and petition [interceding in prayer] for all God’s people.
Hebrews 4:16
Therefore let us [with privilege] approach the throne of grace [that is, the throne of God’s gracious favor] with confidence and without fear, so that we may receive mercy [for our failures] and find [His amazing] grace to help in time of need [an appropriate blessing, coming just at the right moment].
Hebrews 10:20
by this new and living way which He initiated and opened for us through the veil [as in the Holy of Holies], that is, through His flesh,