Verses with the word double in the New Testament (4 verses):

1 Timothy 5:17
Let the elders that rule well be counted worthy of double honour, especially they who labour in the word and doctrine.

James 1:8
A double minded man is unstable in all his ways.

James 4:8
Draw nigh to God, and he will draw nigh to you. Cleanse your hands, ye sinners; and purify your hearts, ye double minded.

Revelation 18:6
Reward her even as she rewarded you, and double unto her double according to her works: in the cup which she hath filled fill to her double.