Romans 1:9

"For God is my witness, whom I serve with my spirit in the gospel of his Son, that without ceasing I make mention of you always in my prayers;"

Cross References (ranked by relevance)

Ephesians 6:18

Praying always with all prayer and supplication in the Spirit, and watching thereunto with all perseverance and supplication for all saints;

2 Timothy 1:3

I thank God, whom I serve from my forefathers with pure conscience, that without ceasing I have remembrance of thee in my prayers night and day;

Romans 9:1

I say the truth in Christ, I lie not, my conscience also bearing me witness in the Holy Ghost,

2 Corinthians 1:23

Moreover I call God for a record upon my soul, that to spare you I came not as yet unto Corinth.

1 Thessalonians 5:17

Pray without ceasing.

Acts 27:23

For there stood by me this night the angel of God, whose I am, and whom I serve,

Acts 19:21

After these things were ended, Paul purposed in the spirit, when he had passed through Macedonia and Achaia, to go to Jerusalem, saying, After I have been there, I must also see Rome.

Philippians 1:4

Always in every prayer of mine for you all making request with joy,

1 Thessalonians 3:10

Night and day praying exceedingly that we might see your face, and might perfect that which is lacking in your faith?

1 Thessalonians 1:2

We give thanks to God always for you all, making mention of you in our prayers;

Philippians 3:3

For we are the circumcision, which worship God in the spirit, and rejoice in Christ Jesus, and have no confidence in the flesh.

Acts 24:14

But this I confess unto thee, that after the way which they call heresy, so worship I the God of my fathers, believing all things which are written in the law and in the prophets:

Acts 3:26

Unto you first God, having raised up his Son Jesus, sent him to bless you, in turning away every one of you from his iniquities.

Luke 18:1

And he spake a parable unto them to this end, that men ought always to pray, and not to faint;

1 Samuel 12:23

Moreover as for me, God forbid that I should sin against the LORD in ceasing to pray for you: but I will teach you the good and the right way:

Acts 12:5

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

Galatians 1:20

Now the things which I write unto you, behold, before God, I lie not.

Philippians 2:22

But ye know the proof of him, that, as a son with the father, he hath served with me in the gospel.

Job 16:19

Also now, behold, my witness is in heaven, and my record is on high.

1 Timothy 2:7

Whereunto I am ordained a preacher, and an apostle, (I speak the truth in Christ, and lie not;) a teacher of the Gentiles in faith and verity.