Verses with the word whilst in the New Testament (3 verses):

2 Corinthians 5:6
Therefore we are always confident, knowing that, whilst we are at home in the body, we are absent from the Lord:

2 Corinthians 7:15
And his inward affection is more abundant toward you, whilst he remembereth the obedience of you all, how with fear and trembling ye received him.

Hebrews 10:33
Partly, whilst ye were made a gazingstock both by reproaches and afflictions; and partly, whilst ye became companions of them that were so used.