Philippians 3:16 But whatever be the point that we have already reached, let us persevere in the same course. (WEY)
Colossians 4:2 Persevere in prayer, watching in it with thanksgiving; (DBY)
1 Timothy 4:16 Be on your guard as to yourself and your teaching. Persevere in these things; for by doing this you will make certain your own salvation and that of your hearers. (WEY NAS NIV)