Verses with the word ceasing in the New Testament (6 verses):

Acts 12:5
Peter therefore was kept in prison: but prayer was made without ceasing of the church unto God for him.

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;

1 Thessalonians 1:3
Remembering without ceasing your work of faith, and labour of love, and patience of hope in our Lord Jesus Christ, in the sight of God and our Father;

1 Thessalonians 2:13
For this cause also thank we God without ceasing, because, when ye received the word of God which ye heard of us, ye received it not as the word of men, but as it is in truth, the word of God, which effectually worketh also in you that believe.

1 Thessalonians 5:17
Pray without ceasing.

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;