Acts 12:5

Peter, therefore, was kept in the prison; but prayer was being earnestly made by the assembly to God in his behalf.

2 Corinthians 1:11

ye also helping together on our behalf by your supplication; that, for the mercy bestowed upon us by means of many persons, thanks may be given by many on our behalf.

Matthew 18:19

"Again, I say to you, that, if two of you shall agree on the earth concerning any matter which ye ask, it shall be done for them by My Father Who is in Heaven;

Luke 18:1

And He spake a parable to them, to the end that they ought always to pray, and not to faint;

Acts 12:12

And, having considered it, he went to the house of Mary, the mother of John who is surnamed Mark; where many were gathered together and were praying.

1 Corinthians 12:26

And whether one member suffers, all the members suffer with it; or one is honored, all the members rejoice with it.

Ephesians 6:18-20

with all prayer and supplication praying at every opportunity in the Spirit, and watching thereunto in all perseverance and supplication for all the saints;

1 Thessalonians 5:17

pray without ceasing.

Hebrews 13:3

Remember the prisoners, as bound with them; those ill-treated, as being yourselves also in the body.

James 5:16

Confess, therefore, your sins one to another, and pray for one another, that ye may be healed. A righteous man's inwrought supplication avails much.

Treasury of Scripture Knowledge

Summary

Peter therefore was kept in prison: but prayer was made without ceasing of the church unto God for him.

General references

Bible References

Prayer was made without ceasing, or, instant and earnest prayer was made

Acts 12:12
And, having considered it, he went to the house of Mary, the mother of John who is surnamed Mark; where many were gathered together and were praying.
Matthew 18:19
"Again, I say to you, that, if two of you shall agree on the earth concerning any matter which ye ask, it shall be done for them by My Father Who is in Heaven;
Luke 18:1
And He spake a parable to them, to the end that they ought always to pray, and not to faint;
1 Corinthians 12:26
And whether one member suffers, all the members suffer with it; or one is honored, all the members rejoice with it.
2 Corinthians 1:11
ye also helping together on our behalf by your supplication; that, for the mercy bestowed upon us by means of many persons, thanks may be given by many on our behalf.
Ephesians 6:18
with all prayer and supplication praying at every opportunity in the Spirit, and watching thereunto in all perseverance and supplication for all the saints;
1 Thessalonians 5:17
pray without ceasing.
Hebrews 13:3
Remember the prisoners, as bound with them; those ill-treated, as being yourselves also in the body.
James 5:16
Confess, therefore, your sins one to another, and pray for one another, that ye may be healed. A righteous man's inwrought supplication avails much.

General references

Acts 5:18
and laid hands on the apostles, and put them in a public prison.