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

Matthew 18:24
And when he had begun to reckon, one was brought unto him, which owed him ten thousand talents.

2 Corinthians 8:6
Insomuch that we desired Titus, that as he had begun, so he would also finish in you the same grace also.

2 Corinthians 8:10
And herein I give my advice: for this is expedient for you, who have begun before, not only to do, but also to be forward a year ago.

Galatians 3:3
Are ye so foolish? having begun in the Spirit, are ye now made perfect by the flesh?

Philippians 1:6
Being confident of this very thing, that he which hath begun a good work in you will perform it until the day of Jesus Christ:

1 Timothy 5:11
But the younger widows refuse: for when they have begun to wax wanton against Christ, they will marry;