Acts 12:5

So Peter was closely guarded in prison, while earnest prayer for him was offered to God by the church.

2 Corinthians 1:11

Let me have your cooperation in prayer, so that many a soul may render thanks to him on my behalf for the boon which many have been the means of him bestowing on myself.

Matthew 18:19

I tell you another thing: if two of you agree on earth about anything you pray for, it will be done for you by my Father in heaven.

Luke 18:1

He also told them a parable about the need of always praying and never losing heart.

Acts 12:12

When he grasped the situation, he went to the house of Mary, the mother of John who was surnamed Mark, where a number had met for prayer.

1 Corinthians 12:26

Thus if one member suffers, all the members share its suffering; if one member is honoured, all the members share its honour.

Ephesians 6:18-20

praying at all times in the Spirit with all manner of prayer and entreaty ??be alive to that, attend to it unceasingly, interceding on behalf of all the saints

1 Thessalonians 5:17

never give up prayer,

Hebrews 13:3

Remember prisoners, as if you were in prison yourselves; remember those who are being ill-treated, since you too are in the body.

James 5:16

So confess your sins to one another and pray for one another, that you may be healed; the prayers of the righteous have a powerful effect.

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
When he grasped the situation, he went to the house of Mary, the mother of John who was surnamed Mark, where a number had met for prayer.
Matthew 18:19
I tell you another thing: if two of you agree on earth about anything you pray for, it will be done for you by my Father in heaven.
Luke 18:1
He also told them a parable about the need of always praying and never losing heart.
1 Corinthians 12:26
Thus if one member suffers, all the members share its suffering; if one member is honoured, all the members share its honour.
2 Corinthians 1:11
Let me have your cooperation in prayer, so that many a soul may render thanks to him on my behalf for the boon which many have been the means of him bestowing on myself.
Ephesians 6:18
praying at all times in the Spirit with all manner of prayer and entreaty ??be alive to that, attend to it unceasingly, interceding on behalf of all the saints
1 Thessalonians 5:17
never give up prayer,
Hebrews 13:3
Remember prisoners, as if you were in prison yourselves; remember those who are being ill-treated, since you too are in the body.
James 5:16
So confess your sins to one another and pray for one another, that you may be healed; the prayers of the righteous have a powerful effect.

General references

Acts 5:18
they laid hands on the apostles and put them into the public prison,